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It may have been fairly late in the evening, but Princess Twilight Sparkle still stormed down the hallway of her school like she was patrolling as Headmare in the middle of the day. She didn't look particularly mad or upset, but her muzzle was still notably skewed in irritation while looking across the rows of locked doors. She had only recently exited from her office, but her eyes were narrowed in determination as if she was hot on the trail of someone who had just escaped her grasp. Of course, despite how tenacious she may have looked while trotting by herself down the crystal hallways, it was hard for the Princess to look intimidating when she was struggling not to waddle in her foalish attire.

Crinkle, crinkle, crinkle, crinkle...

"Mmph..." Twilight grunted softly to herself in annoyance, even though the sounds from her poofy diapers were fairly commonplace nowadays. It had only been a few months since her magic-induced incident, which had left the Alicorn embarrassingly incontinent without much hope for a cure. But despite how mortifying it may have been at first, Twilight was able to readjust her life well enough with the aid of her friends and family. But even nowadays, with the Princess being able to accept her diapered state without much complaint, her ears still twitched upon hearing those incessant crinkles that followed every step she took. Even though she knew she could've used pullups as an alternative, Twilight's cheeks blushed deeply from the thought of wearing something that couldn't handle her incontinence like her current diapers...

"Ugh!" In an attempt to distract her thoughts from drifting off towards more inappropriate ideas, the mare paused her crinkling steps to take a breath. She then looked up and down the vacant hall, and huffed before shouting out, "Are there any students outside of their dorm rooms around here? I'm not going to punish anypony, but I will point out that it's past curfew!"

There may have been one other detail that Twilight wanted to address to anybody within earshot, mostly because she was sure that whomever was around had to be the culprit. Unfortunately, given what actually prompted the Princess to head out of her office and patrol the halls, she didn't seem too keen on shouting it out and risk embarrassing herself. Wearing a diaper at all-times was one thing, and even using it was fairly easy to overcome after the first couple times; but at the same time, the idea of yelling out 'Who stole my diapers?' still felt pretty humiliating. Not to mention, since only six of her diapers were swiped from the emergency stack in the office, she didn't want to make any hasty assumptions until she knew what happened for sure.

"Hello?" asked Twilight as she rounded a corner, and walked towards the closed doors of the library. Even though there were deadbolts for the doors, Twilight's brows rose up with intrigue when she saw they weren't braced-down yet. She could also see a faint beam of light just underneath the doors, as well as some moving shadows to indicate the library wasn't closed just yet. Because of that, the Princess went up to the doors with an optimistic look before knocking on the outside, and speaking up as she asked, "Hello, is anybody in there?"

And with that, Twilight immediately heard several voices whispering frantically inside.

"Shoot! It's Twilight!"

"Quick, we gotta hide these!"

"Are we gonna get in trouble?"

"I hope not. This would be really hard to explain in an office referral."

"Ugh, why did I put mine on so soon?!"

Twilight's eyes narrowed in confusion, but she could make out enough of the muffled voices to realize who may have been in the library. Ever since Cozy Glow was defeated by the aid of Sandbar and his multinational friends -- who were quickly given the nickname of the 'Student Six' by the Elements and classmakes alike -- Twilight made sure to remember each of the students' names and credentials in case their bonds grew more significant. But even though she wasn't surprised to hear the group hanging out together, she wasn't sure how to respond to them all being here. Although, considering how many of her diapers were found to be missing, it didn't take long for the Alicorn to make the connection when she overheard crinkling behind those doors.

"Wait, did they seriously..." The Princess was thinking out-loud, so she let her words trail off before using her magic to open the door. Since the library wasn't locked (even though it should've been given the circumstances), the doors opened with ease as Twilight waddled in with her diaper. "Okay, what's going on in..."

Twilight meant to ask her question firmly enough to show her authority to whomever was inside the library. Unfortunately, as soon as she saw the six wide-eyed students standing around awkwardly, her blush became just as heavy as the ones across all of their faces. Even though five of the six students haven't done anything yet, their frozen looks of terror were easy to understand while the stack of unused diapers were sitting out in the open for Twilight to see. Of course, even if the group tried to give some hasty excuse for what they were doing, there was no way for them to lie while Gallus stood with his diaper already on.

The blue gryphon's eyes were as wide as frisbees, and his blush spread out to the tips of his feathers while the Princess was gawking at him. It was bad enough for Gallus to get caught stealing from his Headmare, but the fact that he stole from Royalty was a completely different can of worms he never meant to open. It was hard for him to discern what Twilight may have been thinking, but her bug-eyed stare prompted him to gulp nervously. After glancing back at the thick and puffy padding that covered his rump in pink plastic, the gryphon let out a neager chuckle before glancing back at Twilight. "Uhhhh... heh heh heh... H-Hey there, Princess Twilight..."

Gallus tried to give the Alicorn a bashful smile behind his blush, as did the other five who were trying to look "natural" in such a ridiculous setting. Unfortunately, all they received was a flat glare from the Princess as she eyed her unused diapers. "Well, I guess I don't need to ask where those went," she said with an unamused tone that made all of them wince. Gallus' legs trembled the tiniest bit, almost as if he was contemplating using his diaper in that very moment out of intimidation. But instead of any hisses or crinkles, the silence was finally broken when Twilight asked the six, "So, would you guys mind telling me why you took my personal items without asking?"

All of the students' heads lowered in shame, and their eyes averted from the Princess instead of giving any answers. After a couple seconds of uncomfortable silence, Gallus scratched the back of his neck and tried to speak. "W-Well, uhhh... You see, ummm... W-We were all talking about stuff, and..."

Twilight wasn't sure if Gallus' inability to speak was due to being caught stealing, or because he was wearing a diaper while struggling to explain himself. But whichever reason it was, the gryphon's awkward stammering caused Smolder to eventually speak up on his behalf. "Ugh, alright already!" shouted the orange dragon in exasperation. "Okay so, Ocellus read an article about the Guards going through new changes before your Coronation. And one of them was about how all your Guards will be required to wear diapers, right?"

Twilight's brows rose up in surprise, mostly because that detail wasn't meant to be public knowledge as of yet. While it was true that Canterlot's Royal Guards were undergoing some... unorthodox changes in anticipation for the Princess' incoming rule, the detail about mandatory diapering was left out of the press for obvious reasons. Of course, considering Ocellus' high test scores, as well as most of the Student Six having close connections with their country's leaders, it wasn't out of character for the Changeling to learn about that detail. So after blinking a couple times in surprise, Twilight gave a light shrug to the students and answered, "W-Well, I... I was going to wait until my Coronation to inform ponies about that, but... Yes, that is something that was decided by the Royal Sisters and myself."

"Alright, cool," replied Smolder with a wave of her claw, not seeming put-off at all by the Princess' answer. Instead, she pointed a claw at Gallus as he blushed more profusely in his diaper. "So anyway, Gallus has been talking a lot about possibly joining the Royal Guard, and Ocellus tried to point out that new measure in case it was a deal-breaker, you know? But when she told him about it, he may have, uhhhh... admitted to getting some practice already~"

As the dragon struggled not to snicker from her little quip, Gallus' feathers ruffled out in embarrassment. "H-Hey, we all have our kinks," muttered the diapered gryphon under his breath.

"Hey, none of us are judging you, bro!" Sandbar, the only pony among the group of international students, had a carefree smile as he went up beside Gallus and wrapped a hoof around his back. "We already told you, there's nothing wrong with you liking diapers."

Even though she had her suspicions about one of the Student Six members carrying an affinity for the garments, Twilight's brows rose up when she realized it was Gallus who had such an interest. But since the gryphon was still rightfully too embarrassed to speak up, Sandbar's assurring hug was matched by Silverstream holding Gallus from his other side. "Yeah, totally!" chirped the hippogriff while smiling cheerfully. "Besides, it's not like we can really judge after agreeing to this little contest~"

As soon as she said that last word, Gallus cringed and looked away from the Princess' confused stare on the group. Her eyes darted between the stack of unused diapers, and the five students who were standing around them in wait. "Wait a minute," she asked while raising up a hoof in clarification, "what do you mean by a contest?"

Gallus' winced expression wasn't the only one, as his friends all grew uneasy following the Alicorn's question. Since Ocellus' name was the first to be brought up by Smolder, Twilight turned her attention towards the Changeling as she veered her sights elsewhere. Ocellus bit her lip while rubbing her foreleg with a hoof, and squirmed a little when she finally said, "Uhhh... We kinda... H-Had a little bet arranged where the loser would have to do the others' homework for a week straight?"

Twilight's eyes widened in surprise, not expecting the students to try and mooch off their studies on each other for the sake of a bet. But since Ocellus didn't seem too eager to explain what kind of bet they were planning to do, it didn't take long for the Alicorn's sights to turn elsewhere. Her eyes locked on the large brown yak, who also happened to be the daughter of Prince Rutherford. But unlike the other members of the Student Six, Yona seemed the least flustered as she shrugged her shoulders innocently, and spoke up for the others in the room.

"Okay," began the yak while pointing a hoof at the gryphon, "Gallus said he does diaper stuff all the time, so being a Guard should be fine for him. Sandbar asked if he'd be okay pooping, and Gallus said he already does, AND that he likes it!"

"Y-YONA!" blurted Gallus as he shot the yak a wide-eyed glare behind his blush. But since Sandbar and Silverstream were still coddling him in support, Yona brushed aside his remark with a wave of her hoof and continued. "Anyway, Smolder asked how Gallus could like it, and he said back to her, 'Well, you have to find out the hard way~' And with that, we all got to talking, and uhhhh..."

Twilight's blush grew even heavier, and she glanced back at the stack of diapers while Yona's words trailed off. All the while, Gallus was standing with a very heavy blush while his beak was tightly clasped shut. None of the other students tried to clarify what the yak was explaining, which caused Twilight to eventually point to her diapers and ask, "So... What exactly is the contest for?"

Again, a pregnant bout of silence swept across the library due to the students' embarrassment over being caught. Fortunately though, before Gallus could try to speak and fluster himself even further, Smolder huffed with a roll of her eyes before stating with a blush, "We, uhhh... We knew that your diapers were enchanted and stuff, so... W-We were about to see who can make the heaviest ones..."

Twilight was caught off-guard by the dragon's answer, and she had to look around and see the wary expressions Smolder's friends were all carrying in response. Due to their embarrassed silence and deep blushes, Twilight didn't need to ask for clarification for what "making the heaviest one" actually meant. But at the same time, the Alicorn's brows remained lifted in surprise by the time she finally looked back at the gryphon. "Ummm... Gallus? Is... Is that all true?"

Despite how lowly he was hanging his head in shame, Gallus was quick to give the Princess a solemn nod without looking up at her. "Y... Y-Yeah, I... I figured if they all did it with me, then... Th-Then maybe I wouldn't be the only one..."

Given how ashamed the gryphon was looking, Twilight couldn't help wincing sympathetically after hearing his explanation. Even though she wasn't too keen on sharing her own experiences with incontinency, she learned enough to understand how it could be seen as "pleasing" to some. And despite the fact that Gallus stole from her, she could somewhat understand why he would do such a thing for the sake of his bonds with the others. Not to mention, the fact that all six of them were in agreement to do a contest like this certainly showed how close they were as friends.

"Hmmmm..." Twilight hummed to herself while tapping her chin in thought, and glanced up at the clock on the wall. Even though it was late, the Alicorn pondered her options before glancing back at the group of students. She then walked up towards the gryphon, and grew a kinder smile on her muzzle as she asked, "So, Gallus... Are you really okay with your friends doing this for you?"

Even though he was still flustered, Gallus was able to look up at Twilight before giving a sheepish smile of his own. "Well, I mean... W-Would I still be wearing this if I wasn't?~" He tried to give her a lighthearted chuckle while tugging at the waistband of his diaper with a claw.

"Fair enough," she replied with a roll of her eyes. She then turned her attention towards the others while smiling more notably. "And... All of you are okay with this contest?"

Despite how weird such an idea should have been, none of the others seemed to mind the absurdity as they nodded their heads with smiles. Sandbar and Silverstream continued to hug Gallus from the sides as the hippogriff said with a giggle, "Well, it's not like I ever wore any diapers growing up, so... Hey, why not?~"

"Honestly, I just want to shut Gallus up about it," added Smolder with a shrug of her own. "If he wants to claim he can drop a load heavier than Ocellus or Yona, I wanna be able to see it~"

"W-Well," piped up Ocellus as she tried to intervene, "I already said I wouldn't shape-shift for this, so it's mostly Yona he has to worry about."

When Twilight glanced back at the yak, she was surprised to see Yona shooting a confident grin over at Gallus in wait. "Heh~ Gallus don't have a chance," she purred while narrowing her eyes mischievously.

"Hey, Gallus has the experience here, remember?~" Sandbar looked right back at Yona with a smirk of his own while holding Gallus close, and speaking on his behalf. "You really think you can outdo him when there's an audience involved?~"

"Yona don't know," she stated before staring straight at Gallus, and asking him, "does Gallus think he can outdo a yak?~"

Despite how heavily blushed Gallus' cheeks may have been, he couldn't resist shooting a confident smirk back at Yona. Twilight may have felt nonplussed about how to respond, but she could tell that the Student Six seemed adamant about doing this. And after looking around the room to ponder her options, Twilight sighed with a shrug before closing the library doors behind her.

"Well, if that's the case," she stated as she lit up her horn, and caught the group's attention while smiling pridefully, "then I might as well supervise this contest to make sure there's no funny business~"

Gallus and his friends all gasped in surprise, but none of them could say anything before Twilight used her magic to lift up the unused diapers in that stack. "But before I start the proceedings," began the mare while staring at the students insistently, "Are there any rules I should be aware of?"

The group all looked around to see each other's reactions, and Smolder was the first to answer the Princess with a shrug. "Eh, not really," she replied while trying not to blush. "We all took laxatives already, so we were just gonna put these on and wait until something happened."

Twilight's brows rose up in surprise, not expecting the dragon to give such an answer so casually. Nevertheless, the Alicorn merely shrugged before pointing out, "Well, I hope you guys didn't take too much. Laxatives can lead to some really bad side-effects if overused."

"Oh, don't worry about that," pointed out Ocellus, who walked up to stand beside Smolder and clarify, "I already checked the dosages for all of us, so we all got the same amounts in relation to our species." She then lit up her horn to conjure up the notes she took, which showed the various ratios she calculated for the dosage in relation to weight and species. Upon reading through the notes herself, Twilight smiled in approval at the changeling's work.

"Well, that's a relief," she said before putting the paper aside. "But since you you guys already started, allow me to help speed up the process~" Twilight caught all of them by surprise as she gave a confident smile, and lit up her horn a bright flash of her magic. With a singular flash of her aura, the Princess ensured that all those diapers floating around would immediately be where they belonged. Before any of Gallus' friends could realize what happened, their backsides were all promptly covered up by Twilight's pink and poofy padding. And while the group all jolted in surprise and took turns looking at each other's padding, the gryphon stood wide-eyed in amazement at how quickly Twilight got them all covered up.

"Whoa!" After taking a moment to admire the view of his friends all being diapered, Gallus looked back at Twilight and asked, "Okay, why the heck haven't you done that spell before?! I bet it would've freaked out a villain or two, at least~"

Even though Gallus' friends were all still adjusting to the thick diapers that were magically wrapped around their waists, they all giggled from the mental image of his little jab. Even Twilight couldn't help chuckling with a roll of her eyes, and said in response, "Well, I learned that spell very recently. But I'll be sure to remember that idea for later on~"

Twilight then lit up her horn again, and floated out a large weight scale that was behind the library's front desk. She also brought over a rolling chalkboard, and used some chalk to write down a quick chart for the Student Six and their little contest. "As for right now, though," said the Princess with a curious smirk as she glanced back at the six, "I think we should try to figure out who should go first~"

Due to how surprised they were by the Princess' quick change of heart, all six students were fairly blushed and frozen for a moment. Silverstream was the first to look around the room with an awkward skew of her beak, and asked, "Uhhh... Are you really okay with helping out with this?" She glanced back at the diaper she was wearing before asking, "I mean, I don't want you to end up cleaning anything, errr... extra."

"I already told you, they were the enchanted ones," pointed out Gallus while pointing a talon at Twilight. "They're supposed to fit any size, and are guaranteed to have no blowouts. Right, Princess?"

"Precisely," stated the Alicorn with a prideful smile. "Which means that there shouldn't be any issues, Silverstream. Trust me, I have no problems with diaper changing~"

Hearing the sincerity in her response, Silverstream smiled warmly as she nodded back at Twilight. Meanwhile, Sandbar bit his lip while groaning a little, and took a couple steps away from her and Gallus. "Ooohhhh..." The aqua stallion winced a bit as he clutched his stomach with a hoof, and squirmed a little in his diaper. "Nnnghh... O-Okay, I think I feel that laxative kicking in..."

The others all turned their attention towards Sandbar, whose hind-legs were already beginning to buckle. Gallus became wide-eyed in an instant, and glanced at the stallion's padded backside while blushing profusely. Yona and Smolder shared a couple of confident smirks before bumping claw with hoof, clearly determined to work together for this contest. Meanwhile, Twilight stepped up to Sandbar with a cautious look on her face. "Sandbar, is it too much?" she asked while trying not to sound too concerned. "I don't want anyone to get hurt."

"N-No! I'm fine, I'm fine..." Sandbar waved away the Princess' worries with his hoof, but his eyes clenched shut as he felt his bowels churning already. His muzzle pursed in even tighter, but that didn't keep a brief grunt from being heard by the others. His eyes reopened for a moment to look around, most likely due to paranoia about what might happen. Fortunately, as soon as he saw the optimistic smiles by his waiting friends (as well as the heavy blush Gallus was sporting), Sandbar felt comfortable enough to reclose his eyes, and then gave an ungraceful squat in his diaper. "Nnnnnghhhhh..."

"Oh my~" said Twilight with a hoof over her muzzle, as she stood behind the stallion and watched him make the first messing. Gallus silently stepped up to be right beside the Princess, and watched intently as Sandbar's diaper began to fill. With the first hard groan he made through his teeth, the group could hear a muffled bout of gas coming out, which made his padding inflate out a little like a balloon. But as soon as he gave another hard push, his legs trembled as the sound of his sloppy mess could be heard pushing against his diaper. Before any of his friends could prepare, their eyes widened when they saw the bulge of a lumpy mound sticking out of the padding right beneath his raised tail. But even as that bulge traveled downward to make the diaper sag between his legs, Sandbar continued to push as he filled more of it with his waste.

"Mmmmphhhh!!~" The back of Sandbar's diaper soon grew a faint shade of brown against the pink plastic, and the smooth surface across the outside became lumpy and swollen from the heavy messing he was giving to the inside. Most of the pony's friends could only gawk with deep blushes, not expecting for Sandbar to be carrying such a heavy load between his legs. Of course, even over the sounds of Sandbar's grunts, as well as the sounds being emitted from his diaper, Gallus was making the most noise from how hard his tail was wagging and smacking the sides of his own padding.

"Aaaaaaahhhhh... Nnnffffff~" After only a few minutes of strenuous pushing, Sandbar's diaper became tremendously heavier due to how tenaciously he filled it to the best of his ability. By the time he was finally finished, the stallion sighed with a relieved smile. His padding had sagged down enough to nearly reach his knees, but the waistband was still secure enough to ensure most of his mess was still pressed up against his rump. And after letting out a soft shiver, Sandbar glanced back at Gallus with a smirk and asked, "Uhhh... H-How did that look on your end?~"

Since Gallus was blushing profusely with his feathers ruffled out, it wasn't too shocking that the rest of their friends were struggling not to giggle. But since Twilight was present to prevent any teasing, Gallus eventually scratched the back of his head and tried to smile nervously. "W-Well, ummm... I'm not gonna lie, dude. That was quite a thing to see up-close~"

Twilight finally giggled in amusement, which prompted the other students to do the same. Luckily though, she was quick to say to Gallus, "Well, you can easily go next if you feel up for it~"

Even though he seemed up for it, Gallus shrugged his head and admitted sheepishly, "Uhhh... Could I wait a little? I'm not sure if I can get much out right now."

"That's perfectly fine," assured the Princess, before she turned her attention towards the others. "Anyone else?"

Since Sandbar was finished, he tried to waddle off to the side while wearing his heavy diaper. Of course, the sloppy mess caused the garment to dangle between his legs with every step. Gallus continued to stare unsubtly at the stallion's gait, while Smolder sighed and stepped forward. "Okay, you know what? I might as well get this over with."

"W-Wait, really?" asked Gallus, who whipped his head back to stare at the dragon wide-eyed. Meanwhile, Smolder was already preparing herself as she perched herself down in a squatted stance.

"Hey, I feel it coming, and I don't wanna waste my chance." With that, Smolder shot a smirk back at Gallus and asked, "You wanna see this upclose too?~"

That question may have been a bit jeering for Twilight's taste, but Gallus nodded his head behind his overwhelmed blush. Because of that, Smolder huffed with a wider grin and said, "Well, nnnghhh... I hope you're ready for this!~"

Smolder then hunched herself in a fetal stance as her legs quivered, and her diaper was hanging less than a few inches above the floor. While Sandbar struggled not to wince from the smell emanating from his soiled diaper, the others were leaning in to get a good view of the dragon's messing. Meanwhile, Smolder clenched her fangs as she groaned louder than Sandbar had, and belted out a rumbling bout of gas that sounded like a growl behind her padding. Of course, that rumbling was quickly accompanied by a large bulge that pushed out from beneath her raised tail, as well as that all-too familiar smell that made most of her friends' noses wrinkle.

"MMMFFFF!~" Smolder may have wanted to get her messing over with, but her diligence showed no bounds as she pushed with all of her might. Her claws could be seen clutching tightly into her palms, and the mass at the rear of her diaper was already swelling out at a quicker rate than Sandbar's. Much like the stallion, her own padding soon became lumpy and browned across the outside of that pink plastic. The bottom of her diaper quickly sagged downward, and grew a deeper shade of brown with every push she made. Sandbar's brows rose up in amazement, before he glanced back at his own diaper in worry that he already lost against her. Meanwhile, Gallus was blinking repeatedly while eyeing the mass that was growing in Smolder's diaper.

"Nnnnffff!!~" Y-You like that, birdy?~" teased Smolder as she looked back to eye him with a smirk. Of course, the dragon continued to push as she spoke, which caused her diaper to eventually sag past her buckling knees. "Nnnnggggg... I-I should've... H-Had you lying underneath me when I started this~"

That comment seemed to be too much for Gallus, as he quickly looked away from the dragon with a heavy blush. Twilight grew concerned when she looked back at the gryphon, and noticed a small trickle of blood seeping from the nostril of his beak. But before she could freak out, Silverstream let out an enamored "Dawwww~" and went up to dab Gallus' beak with a tissue. "Ohmigosh, I think you broke him with that image, Smolder~"

Gallus groaned as he reeled away from the hippogriff's teasing, but his response wasn't harsh enough to warrant the Princess intervening. Instead, she and the others glanced back at Smolder by the time she finished her heavy soiling, which left the bottom of her diaper hanging a couple inches off the ground. The dragon shuddered with her eyes clenched shut, and groaned under her breath as she pulled herself back upright. Her diaper looked significantly more swollen than Sandbar's, with the mass of her messing creating a thick mound of lumpy filth right underneath her tail. But despite how she may have looked, Smolder huffed with a confident smirk and said to Gallus, "Heh~ Try and beat that, dude!"

Gallus was still heavily blushed, but he tried to clench his eyes shut in an attempt to focus. The gryphon let out a couple of hard grunts, which caused the others to back away from him just in case. But alas, even when his tail lifted up to emphasize something happening, Gallus only pushed for another minute before groaning in disappointment. "Ugh... Not right now," he muttered bitterly.

"There's still three others, you know~" chirped Twilight, who made sure to give a reassuring wink to Gallus. Meanwhile, Smolder cringed while waddling away in her soggy padding, and stood right next to Sandbar in wait. As the two waited side-by-side, Ocellus leaned back to sneak a glance at their messy diapers next to each other. The smell wasn't too pleasant, but the sight alone was enough to make her blush with her brows raised upward.

"O-Oh wow!" she said with a hoof over her muzzle. "I didn't know they could hold that... th-that much... Nnnnffffff..."

The changeling reeled back as she winced in discomfort, and her body tensed up tremendously. As Ocellus' wings fluttered rapidly against her back, Twilight was the first to ask her, "Ocellus, are you ready to go next?"

Ocellus immediately waddled up towards the middle of the group, and said through her cringed expression, "A-Apparently my body is! Oh gosh, oh gosh, oh gosh..."

Each step she took caused a couple of audible poots to seep out through her padding, emphasizing how suddenly the laxatives were taking effect. Unlike Sandbar or Smolder, Ocellus merely slumped the front end of her body against the floor while her backside was raised upright. If it wasn't for her thick diaper, it almost would've looked like she was presenting herself for a mate. Although, judging by Gallus' heavy blush upon seeing her in such a pose, maybe that wasn't such a jarring comparison to make...

"Aaaahhhh!!" Ocellus' face clenched in with a painful expression, and she groaned out from the onslaught of filth that quickly expelled into her diaper. The two students who already went got wide-eyed in worry, and could see how suddenly the back of her diaper pushed out. However, it seemed that most of her messing was less solid than theirs, as the majority of her load settled right between her quivering legs. The diaper still grew heavy enough to sag down with every push, but the backside was notably smoother and less stained than theirs had gotten. Nevertheless, Gallus was still staring at the changeling with awe as his eyes widened, and his head tilted sideways to get a better angle.

"Mmmmmfffffff..." Ocellus was trembling hard by the time she finally finished, and beads of sweat were sticking out against her chitin. Fortunately, Twilight was happy to see that she looked much less distressed after her messing, and was even able to sigh in relief. "Aaaaaahhhhh..."

As she lifted herself back up, Smolder huffed with a smirk and whispered into Sandbar's ear, "So much for equal doses, huh?"

The pony chuckled a little in response to that quip, but both of them looked happy that Ocellus was alright. And much like them, the changeling waddled with a heavy blush with every squish she heard between her legs. The feeling of so much hot and liquidy mess clinging to her nethers was enough to make her hooves tremble between steps, but she was able to stand beside her friends before shuddering briefly. "Nnnnphhh... Wow, this is weird."

"Y-Yeah, it kinda is," said Smolder as she squirmed in her diaper, and could feel the heavy mess sticking to her scales so tightly. The sensation was definitely new, but the dragon eventually shrugged with a meager smile and admitted, "But, uhhh... It's not exactly a bad kind of weird either~"

Twilight smiled in approval of Smolder's honest assessment, as well as the sheepish nods both of her friends made in agreement. Since none of them were growing too fidgety for a change just yet, the Princess had to ponder whether or not they might have a similar mindset to Gallus after this was over. Meanwhile, Yona finally lumbered up to the front with a determined expression on her face. Despite her bulking size and figure, the enchantment in Twilight's diapers ensured that the garment was able to cover the entirety of the yak's backside effortlessly. And with her stubby tail wagging above the waistline, Yona shot a glance back at Gallus while pointing her diaper towards him. "Hey, Gallus," she said with a cocky tone of voice that matched her smirk, "want to get underneath Yona's diaper for this?~"

Twilight had to do a double-take after gawking back at Yona, looking rather shocked that the yak would make such an offer. Meanwhile, Gallus' eyes grew to the size of dinner-plated while eyeing the thick yak and her currently clean diaper. "W-Wait, I mean... A-Are you serious right now?" he asked with a trembling, and almost hopeful-sounding tone of voice.

Yona nodded her head assuredly, and widened her stance so there was a notable gap between her hind-legs. "Yona won't ask again~" she purred warningly, most likely due to the churning that could be heard clear as day from her gut. She tried to grin confidently, but her muzzle skewed with a grunt as her bowels became too overwhelming. "Nnnfff... S-Seriously, Yona can't ask again! Gallus in or not?"

Without hesitation, Gallus shuddered with a clenched beak before he lunged in, and rolled onto his back to slide across the floor. His paws scurried eagerly to push him towards Yona, and he slid right between her legs like a mechanic inspecting a carriage. The moment his blushing face was perched right beneath Yona's giant diaper, the gryphon shuddered with his wings splayed out across the ground. "Mnnnghhh... Oh, Gallus is totally in~" he said with a lustful purr. Fortunately for Gallus, the tent of his throbbing erection could barely be seen due to how poofy the crotch of his padding was.

Yona could catch the inflection in his voice, but she merely smirked down at him before squatting herself lower to his face. "Yona approves~" she said with her eyes narrowing suggestively, before she quickly clasped them shut and began to push. "NNNNFFFFF!!!~"

Gallus could hear the yak's strained groans, and shivered with anticipation while staring up at her diaper. Twilight seemed a little uneasy being present for two students doing this, but she could only shrug while remaining silent on the matter. Silverstream tilted her head curiously while eyeing the two, and grew an excited smile as she said, "Oooohhh!~ I guess Smolder was right after all!"

The dragon huffed with a pleased smirk while crossing her arms over her chest, but kept her eyes on Yona as she belted out a strained groan. "HMMMGHHHHH!!!~"

Gallus shivered a little when he heard a couple of nasty rips from Yona's gas upclose, but his beak clenched tightly in wait for what was going to occur next. And just above the gryphon's head, the underside of Yona's diaper almost instantly hung down a few inches from the first heavy load she was able to push out. With every heavy groan the yak let out, her stubby legs trembled as she pushed out another thick volley of mess directly into that padding. Enchanted diaper or not, even Twilight's eyes widened in shock when she saw how much the plastic padding was stretching out to carry her load. But since the diaper was guaranteed to have no blowouts, Gallus was able to confidently shiver with a blushed grin as that sloppy mound inched closer towards his face.

"Oh gosh," he muttered between his faint breaths, as his hips writhed from how badly he was throbbing in his padding. But despite how enamored he may have been from that massive load Yona was pushing out, the gryphon could feel his own bowels finally starting to churn in his splayed state. He could feel it coming, and his paws clenched in tightly for his friends to see. Of course, even with his stomach beginning to go into knots, Gallus shuddered with a weak moan while gazing up at that deeply browned and lumpy bulge Yona was sporting between her legs. "Nnnffff... That... That's so m-much~"

"Heh~" Even though her eyes were half-lidded from the strain of her pushes, the yak was still able to grin confidently above the writhing Gallus. "Yona take that as compliment~"

"Believe me, you should~" said Gallus with a shivering moan. The stench from her messy diaper was bad enough to make the tips of his feathers start to curl in, but his lustful grin made it obvious that he loved the view he had. The mass of filth from her messing looked to be as big as Gallus' head, and he could only imagine how she would look during the diaper change later on. But even with his enjoyment, the gryphon wasn't able to ignore the intense growling that emitted from his upset tummy. "Mmmfffff!!~"

"Ooh!" Silverstream was the first to take notice of Gallus' squirming, and pointed down to his diaper while Yona was still fudging her huggies. "Ohmigosh, I think Gallus is about to go!"

"Hmph~" Yona paused her pushing for the briefest moment to glance down at the gryphon, and said in a cocky tone, "Gallus better prove himself better than Sandbar~"

"H-Hey, come on!" griped the stallion in question, who huffed with offense and looked away from Yona. "Ocellus' load is way smaller than mine!"

"Nnnffff... I-It certainly doesn't feel that way," groaned the changeling, who could help squirming uncomfortably due to how heavily all her mess pooled down to the bottom of her diaper. Unfortunately, with every movement she made, the changeling tried not to shiver from feeling all that hot filth pressing up against her nethers. Sandbar may have not been able to notice it, but Smolder caught just enough to shoot Ocellus a sly smirk and a nudge.

"Heh~" While everyone else turned their focus onto Gallus, Smolder leaned in close to the changeling's ear to whisper sultrily, "Be sure to let me know if you need a personal changing sometime~"

Ocellus' eyes shot-wide open, but her sudden blush was unseen by the others as they overheard Gallus' strained groans of pressure. "NnnnnnnnNNNNNNGGGGGG!!!~"

Since the gryphon was still lying on his back, he had to lift up his hind-legs like he was prematurely getting ready for his incoming diaper change. But despite the awkward positioning, Gallus grimaced with his beak tightly clenched as he pushed with all his might. And even when he lifted up his head for leverage, which caused his forehead to press up hard against the underside of Yona's messy padding, the sensation only elicited a strong shudder as he soldiered on without pause. And as the yak squirmed above him and moaned out from that unexpected pressing against her sensitive regions, Gallus finally opened the mudgates while looking like a mare giving birth.

"Aaaaahhhhhh!!!~" With a deep and shaky moan through his clicking beak, Gallus' diaper almost instantly ballooned out between his writhing legs. Everyone could hear the muffled roar that bellowed out from his padding, which actually overshadowed Yona's constant rumbling for a second or two. But even as the yak's messing was finishing up, and that heavily soiled padding drooped down more notably atop Gallus' head, his beak remained wide-open as he moaned out and pushed relentlessly. Meanwhile, the thick padding between his legs continued to swell outward with that same shade of brown as all of his friends.

Even though the spectacle was certainly unique enough to keep Silverstream's attention, her beak was skewing uncomfortably due to the smell that was lingering in the library. Twilight didn't seem to mind it, but that was most likely due to her being used to it. The hippogriff waddled over to the desk to grab a can of air-freshener, which she used generously to help with the growing stench. Of course, due to how much she was struggling not to grimace, her excessive spraying seemed to catch Smolder's attention with a raised brow.

"Hmmm..." The dragon eyed Silverstream with intrigue, and smirked a little as she asked, "Lemme guess... You're trying to distract yourself from what's about to happen to you?~"

Due to how deeply her cheeks flushed after that question was asked, Silversatream's silence said more than any words. But even as her beak clenched tightly, and she squirmed with a groan while putting the can down, Silverstream tried to maintain her composure as she said weakly, "I-I'm fine, I'm fine. Uhhhh... I-I think I can wait until they finish..."

She motioned back towards the messy students on display, just as Yona let out a deeply relieved sigh. Due to how heavily her mound of filth was testing the limits of Twilight's enchantments, it was surprising to see how much she was able to unload to leave the attire a steaming bulge of brown lumpiness underneath her tail. Gallus' head was still pressed up against the underside of her diaper, with only his beak sticking out to continue groaning intensely. But even with how hard he was straining underneath and around so much messing, the gryphon looked rather content with himself by the time he gave his final hard pushes. "Nnnnnnngggggg... Aaaaaahhhhhhhh~"

By the time his paws finally touched the floor, Gallus could barely even move while his legs were spread so far apart by his swollen diaper. Much like Yona, who was courteous enough to pull off the gryphon with a grunt, there was much more brown across his plastic padding than the glossy white it previously carried. The bulge was obscenely dark and lumpy, and would've likely pulled off the tapes of any non-enchanted diaper. But more surprising than that was the fact that, despite how much larger Yona was overall, it seemed that Gallus may have possibly matched her when it came to volume.

Pssssshhhhhhhhh...

"Aaaaahhhhhh..." Gallus leaned his head back while sighing blissfully, and his feathers ruffled out contentedly while everyone else overheard that distinct hissing. Meanwhile at the tented crotch of his diaper, the gryphon's padding started to swell out a little more, and also grew a slightly deeper hue across the plastic.

"HEY!" Smolder instantly got peeved enough to point at Gallus' wetting and shouted, "He's cheating! He's adding extra weight!"

"I'll allow it," said Twilight with a firm tone of voice. She then looked back at Smolder and pointed out, "Honestly, I don't feel like peeing is worthy of disqualification. If it was, then you would likely be considered a cheater from what I can see~"

The dragon blushed heavily, and glanced down to see that her own padding had an evident dark spot around her crotch. She cringed a little while looking away from the Princess, and muttered, "Th-That was an accident."

"Well, welcome to my world," retorted the Princess with a shrug of her head.

While Smolder and the others kept themselves silent on that matter, Gallus huffed with a smile before looking down at his bulging diaper. "Mnnghh~ Man, these diapers are great! I never used them this heavily before!"

"You know what? I can't even blame you." Twilight covered her mouth with a hoof as she giggled to herself, and couldn't help smiling in amazement at how much both of the students were able to fill their garments. "I knew my diapers could hold a lot, but this is astounding!"

Since Gallus and Yona were finished pooping, and were busy helping each other get up through heavy breaths, the focus was able to move from them towards the final messer. And judging by how red the hippogriff's face was getting, none of them needed to ask why Silverstream was squirming so badly.

"MMMPHH!!" She clasped her gut with a claw while lurching her head downward, and a strained grimace could be seen through her heavy blush. "Aaaahhh! I... I don't know if I can do this myself..."

Due to the distress in her voice, Twilight was quick to go up to her and ask, "Is something wrong? I can get you to the nurse's office if you--"

"I-It's not that!" she blurted while holding up her claw to interrupt the Princess' words. Silverstream then winced with a sharp groan, and clutched her stomach again before confessing, "It's, uhhh... I-It's more about my... constipation, that's all..."

That detail got Silverstream's friends just as concerned as the Princess. None of them wanted to step up towards her while their diapers were bulging with their various messes, but Ocellus was able to lean her head in and ask, "Ummm... When was the last time you went to the bathroom?"

That question caused her face to turn especially red, and she hung her head in embarrassment before admitting, "F... F-Five days..."

Twilight and the others all gasped in shock, clearly not expecting such a big detail to have been left out until now. The only student who didn't look worried was Gallus though, as his face lit up like a Hearth's Warming tree. He stared at the hippogriff wide-eyed, and quickly waddled up to her while his sloppy mess squished with every step. Before Twilight could try to intervene, the gryphon shuddered with an antsy grin and said, "Ooooohhhhh... Okay, I know I can help with this~"

While Silverstream continued to writhe with a strained expression, Gallus got up behind her and wrapped a claw underneath her barrel. The moment she reeled her head back and gasped in shock, Gallus whispered into her ear, "Don't worry, I'm just gonna massage your stomach to help move things out..."

The gryphon quickly went to work, and gently kneaded the hippogriff's stomach with both of his claws. Despite her earlier surprise, Silverstream's eyes slowly closed shut before she shivered with a soft moan within his grasp. Meanwhile, Ocellus decided to help by lighting up her horn, and carefully floated Silver onto her back. The moment she was laid down in a position similar to what Gallus did earlier, the gryphon positioned himself between her legs while continuing to massage her belly. "Mnnnghhh... H-Holy crap, you're firm..."

Silverstream clenched her eyes shut, and nodded sheepishly before muttering, "I... I-I had a lot of fiber... A-And bacon..."

Gallus' eyes shot wide-open, before he grew an even wider grin and kneaded her gut a little harder. "Nnnnfff~ Silverstream, if you manage to make a load bigger than me or Yona, I'll change your diapers for a month~"

Despite the painful pressure stirring in her growling bowels, she looked up at him with a coy smirk and said, "That sounds more like a reward for you than me~"

"What, so you're saying you won't let me?~" Gallus perked his brows, and grinned eagerly down at her. Fortunately for him, Silverstream took a second before shrugging with a roll of her eyes.

"W-Well... I'll think about it after this~" With that, Silverstream clenched her eyes back shut before lifting up her legs like Gallus had, and clenching her beak tightly. "HNNNNGGGGG!!!"

Gallus continued to massage his friend, but his wide-eyed gaze peered down at that waiting diaper in anticipation. She kept groaning for a moment or so, but her clean diaper was leaving the others worried for her safety. But just as Twilight was about to step in, she and the others reeled back when they heard what sounded like a lion roaring right underneath her padding:

BLLLRRRRRRRRTTTTTTTT!!!

"AAAAHHHHH!!!" The hippogriff's back arched like she was going under an exorcism, and her paws clenched tightly as she unleashed the biggest mudslide of the group. Much to everyone's shock, Silverstream wasn't kidding about her constipation as the bottom of her diaper pushed out tremendously far from her first push. An absolute volley of her built-up mess flooded the diaper in an instant, and almost immediately browned the glossy padding like a coat of paint. But even as the thick bulge of her poop grew out at an alarmingly fast rate, Silverstream kept pushing while writhing under Gallus' claws. "NNNNGGGGG!!"

"Ooooohhhhhh, baby~" Gallus shivered in absolute elation, and grinned like mad as he saw that diaper bulging out right in front of him. "That's right, keep going~"

Even if Silverstream was able to stop, it was doubtful she would as she reeled up further and pushed like she was laying an egg. "GNAAAHHH!!!~"

Even with how pained and straining her voice was getting, Silverstream's nerves were tingling intensely as she felt that mudslide filling every square inch of the diaper her mess could reach. Soon enough, her poop was starting to overfill into the sides of her diaper, as well as the front. The moment she felt that thick, steaming hot mound pressing up against her nethers, her legs tried to clench together as she belted out a heavy moan; of course, that action only pressed the filth up tighter, which just intensified her lustful cries while pushing out more.

For a good five minutes, Gallus and the others could only watch in awe as Silverstream easily outdid her friends. By the time she slumped back onto the floor, her enchanted diaper was bulging from the sickly brown that was covering nearly every inch from the inside. Gallus' eye twitched as he stared with a gaped beak, and shuddered to himself from the massive messing he was able to witness upclose. But before he could try to say anything, Silverstream groggily reopened her eyes and smirked up at him. "Soooo... You still wanna change me, Gallus?~"

The gryphon was too floored by her display to speak, but his frozen expression was accompanied by a firm nod of his head. Because of that, Silverstream huffed before adding, "Well, I'm happy to hear that. Because I have a feeling I won't be needing any toilets this month~"

If Gallus was touching his diaper in any way, he likely would've came on the spot from how badly he throbbed in his padding. Meanwhile, Twilight Sparkle lit up her horn, and helped pull the hippogriff back to her upright stance. Gallus assisted in walking her back towards the others, who were all quick to hug and claw-bump her in support. But as the hippogriff smiled weakly, and shivered with every moment she made in her squishy padding, Twilight walked back to the chalkboard to catch their attention.

"Okay then..." With a confident smile, Twilight turned back to them while holding a piece of chalk in her aura, and pointing to the weight scale on the floor. "Even though I have a feeling who may have won already, I might as well ask you guys this anyway: Who wants to be changed first?~"

Every single one of them put up their forelegs to volunteer, which made the Princess smirk with narrowing eyes. "Perfect~"