Bou Bulge Bou Problems

Story by Thunderdramon on SoFurry

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#24 of Story Commissions

A story commission done for FA: KajiRyuujin involving his friend, Mnty the caribou and some hyper shenanigans. Unwilling cock growth, lots of cum, pretty much par the course for knowing Kaji.


Sometimes, it was awesome having a deity for a friend. Even if they didn't like you bothering them for the minutest of things, the pure convenience was amazing. Whether it was trying to get to the other side of town with the snap of a finger, getting some milk that wasn't expired or even helping take out the trash, Kaji was something of a godsend to Mnty whenever he didn't have much time due to work or school projects in the way. Kaji and he never had much time to meet up, so they usually spent the whole day either playing video games, hanging out around the town.

Whenever the caribou was somewhat deprived of a good fucking, Kaji was also there too. Mnty's apartment was filled with the sounds of grunting and groaning. Mnty spread his hands on the wall, Kaji spearing that two foot shaft into him. Pre splattered from the duo onto the ground, every thrust and pound making the wall shake slightly. Pendulous, grey and fuzzy orbs swished around with every powerful rut from Kaji, smacking into Mnty's spread thighs, the caribou now gripping the wall with one hand and eagerly stroking himself off with the other. Mnty's knees began to wobble, forcing Kaji to wrap one hand around him and snort.

"Hmm, if yer gonna start falling, lemme give you a hand with that..." Kaji huffed.

Kaji slowed his pace down, his soda bottle thick tool throbbing inside Mnty. Every pulse and push from that large member made his stomach bulge out with pre cum, any excess simply falling onto the floor in a large puddle of the stuff. After taking a deep breath onto the caribou, he resumed his avid rutting, this time with an added effect. Mnty clutched the wall again as Kaji's rough fucking caused his body to heat up even more and make his muscles lock up. He huffed and panted, the caribou putting his cheek to the wall, antlers grinding against the surface. His cock throbbed incessantly, begging him to keep going while he could.

"Mfff...keep going, j-just like that!" Mnty grunted.

Mnty's brown furred body seemed to bulge and flex with every one of Kaji's thrusts. The caribou opened his eyes amidst the pleasure to see his frame slowly bulking up with muscle from every hit. His previously flat chest was beefing up right before his eyes while his arms slowly inflated with muscle. His shoulders broadened and his neck widened as well, Mnty grunting and growling as he bulked up larger and larger before Kaji's eyes. At six feet and four inches, he barely towered over Kaji thanks to his horn. With every smack and thrust of the mutt and his incredibly large tool, the difference between them widened. His back pulsed, brown fur spreading around his frame whilst his face and muzzle broadened a tad bit to accommodate the new upcoming size. After a few minutes, Kaji could barely get his arms around Mnty's broad, powerful back and was forced to keep his arms at his waist to keep on going. The growth didn't seem to stop there as well.

Mnty's cock, still begging to be touched, started to lurch larger and larger, a few inches being added on it to seem proportional with the rest of him. Globs of pre spilled out from the head, though it was nothing but a drop in the bucket compared to the mutt plowing him to the wall. Hit after hit did that pink colored shaft swell in size, those furry brown orbs underneath swishing and sloshing with enough circumference to be mimic baseballs and still going.

"Almost there...!" Kaji huffed, his tongue lolling out of his mouth.

Pre cum splattered along the apartment floor at a much faster rate, Kaji's balls slapping against Mnty's bulked up thighs before he finally stopped. With one deep groan and shoving that member deeper into the caribou, rope after rope of seed filled his stomach, making Mnty's newly gained abs distend and swell a bit outward. Mnty let out a deep moan, forming a fist and smacking the wall with every load that was emptied into him. At around half an hour, the floor in front of them had been completely coated in cum along with the wall Mnty leaned on. Sweat dripped from the caribou's manly form as he tried to walk to the couch while groaning and grabbing his rear.

"Jeez, could have been a bit more gentle there." Mnty grumbled, his deeper voice ringing through the apartment. "Kinda tired now..." he yawned, laying down on the couch.

Kaji crossed his arms with a laugh. "I'll be back to check up on you if I can. Guess it's up to me to clean up the mess?"

"Pleeeeease, you went and tired me out despite all this." Mnty groaned, motioning toward his body.

He craned his head back on the nearest pillow, a light snore erupting from the mountain of beefy caribou. The mutt shook his head and hummed. He did seem to be leaning on him just a bit too much. He didn't mind hanging out and doing stuff for him since Mnty always repaid him for every favor, but an idea formed in his head. Maybe it was time for some fun of his own. He walked over to Mnty and poked at his crotch, then dragged a black finger up to his arms and chest with a grin.

"Sleep well, buffibou~."

It was the last thing Mnty heard before finally drifting off to sleep. When the morning sun hit his face, the large caribou stirred in his couch for a few moments before falling off upon trying to roll. Mnty hit the ground with a loud thud, jolting himself awake and staring around in confusion. He rubbed his head and gathered himself up. He really needed to get the shades replaced since they still let an ungodly amount of sun inside. Just what even happened last night? After walking around, the memories started coming back as he patted a beefy pectoral. Oh yeah, Kaji was over and cleaned up after him. He really needed to repay him for that. Whenever they met, he was usually the one asking for favors first. Mnty normally repaid him for his acts of kindness, but being the first felt like he was taking advantage. The caribou yawned and stretched his arms, biceps bulging powerfully alongside his tank-like chest.

"Ooh, that feels kinda good...though why am I still like this?" Mnty grumbled, scratching his two toned chin.

He stumbled along to the bathroom continuing to scratch his pecs and feeling them bounce and flex every time. Mnty observed himself in the mirror with a building curiosity, finding that he could barely fit in the mirror for the first time. While he still retained his height of six feet, he was built enough not to count as a champion bodybuilder but could really turn some heads if he went outside! Shoulders wide enough to carry a few people, thick neck to grab attention, and Mnty probably would have swooned at his own reflection. After bouncing his pecs and flexing his arms a few more times, his mind faded back to last night. The heated grunting and fucking, the sound of Kaji's load splattering on the floor along with his own...Mnty's leg twitched for but a few moments, as if trying to cover his crotch out of embarrassment.

The caribou took a long and drawn breath before exhaling. The image of himself, a large stud being fucked into the wall sent him over. He just had to take a bit of the edge off, yeah, that was it. Mnty sat himself on the toilet and spread his legs, eagerly grabbing his half hard shaft. He pumped and stroked with a few groans, cock throbbing against his chiseled, fuzzy abs and his hand. That thing was close to ten inches thanks to a certain mutt and he was enjoying every bit of it. Baseball sized orbs were perched on the toilet seat with the pink pillar slowly drooling pre onto his hand and stomach.

With a few more steady pumps, Mnty was spurting thick ropes of cum over his hand, one of the ropes splattering against his chest with a rumble of pride from the beefy caribou. Before he could revel in his afterglow, he felt himself tingle a bit. The tingling sensation started to focus right near his hands as if it traveled from his chest. With every spurt of seed, Mnty felt it throb and pulse even more so than before. It took a minute or two for him to come to his senses and during the time, that length expanded inch after inch, gaining more thickness and overall size while his balls sloshed with production and became even plumper, well past the size of cantaloupes.

"W-wha...?"

Mnty looked downward to see his bulky and fuzzy frame coated with his loads and a cock nearing past a foot in his hand and slapping past his belly button and lazily drooling pre once again. His afterglow faded into mild surprise, then confusion. That wasn't supposed to happen. Usually after he got the edge off once Kaji's played with him, the effects wore off. Why wasn't it wearing off? Maybe he was just hallucinating and it was actually that big to begin with. Mind filled with confusion, Mnty couldn't help but keep his hand around that drooling pillar and started to jerk himself off again.

He never felt this full before, and yet here it was. Abs coated with seed and a bit of it on his muzzle, those orbs still felt completely full and he just had to do it again, just to make sure that he wasn't crazy. Mnty couldn't even grip that fourteen inch shaft with one hand and was forced to two hand it as he rocked his hips and spread his leg along the floor. His hooves clacked against the tiles with every movement. His groans filled the bathroom, and within a few more minutes he was blowing again. Thick ropes of white jettisoned from Mnty's shaft and with every pump, his loads splattered over the bathroom floor and smeared his torso and chin with white. Every load felt just as voluminous as the next, the caribou leaning his head back onto the wall (or what he could reach no thanks to his antlers). Before long, his torso was whiter than brown and the caribou left a panting mess.

And then it started again. The same tingling feeling from before spiked up. This one didn't fade away like the last one and began to linger around some more. Through his slightly shut eyes, Mnty stared at his leaking shaft and watched it grow before his eyes. It gained inch after inch, climbing higher and higher while his hands slowly began to separate from the thickness of it. Under the right light, Mnty could have thought he was handling a three liter bottle of soda and then some. He panted, feeling the beast throb angrily, veins pulsing along base of his growing shaft. His nuts weren't left out of the fun as they continued to slosh and swell with cum, becoming large enough to look like he stuffed two basketballs in there. Due to their enormous size, he was forced to scoot a bit upward so the two massive fuzzy orbs could swing with freedom and space. Once Mnty got over the afterglow and cleaned himself up, he discovered that he wasn't hallucinating. He was indeed getting bigger.

Upon looking for a pair of briefs to put on, Mnty found the difficulty of trying to fit something that was close to three feet while soft into a pair of previously medium size underwear. The caribou had to be inventive and look for a pair of sweatpants and simply go commando. During the entire time, he found free-balling it to be a brand new experience with things slapping against his meaty thighs and having to adjust his leg positioning when sitting down. However, the panic overwhelmed the curiosity as he rapidly dialed the phone.

"Kaji, what the hell did you do!?" Mnty cried into the phone.

"Heeeey. How big are ya now?" Kaji's nonchalant voice didn't help calm the caribou. So he was behind this!

"Close to three feet- that's beside the point! Why am I still growing? I thought it was a onetime thing after last night." Mnty assumed. His concern was palpable over the phone, but Kaji didn't seem to acknowledge it.

"Cause I wanted to have some fun see how leaving you hanging goes. I'll be visiting again over the weekend to see how you're doing. It won't get any worse, unless you, you know, want it to. Have a good week!"

With that, Kaji hung up, leaving Mnty in silence. All week? If Mnty wasn't on summer break, he would have been worried about it even more. It was one thing being hung like a damn horse, it was another thing being around people. Sure, Kaji could pull it off, but he didn't have the over-flowing confidence for it. He stared down at his grey sweatpants and grumbled. From his concern and panic, anger started to build up at the situation. Whenever anger rose up, he'd either draw or go to the gym. Mnty continued staring at himself, his heavyweight and overly muscled body catching his attention again. Maybe he could take it for a spin at the gym for the next few days and try to stave himself off on the urge to play with himself.

"Maybe it could work out well. Hah, work out, I crack myself up." Mnty mumbled to himself as he went into his room to get a duffel bag and some clothing out of what would still fit in his closet. When the caribou emerged, he was wearing a pair of workout pants that clung to his thighs and unceremonious bulge which snaked down one of his legs, the head occasionally bumping against his knee. Mnty blushed a bit as he left his apartment, using the duffel bag as a cover.

Whenever he went to the gym, the caribou usually did things like cardio first and went into small weightlifting last. Today was supposed to be running and a light chest day. Considering his current state of affairs, Mnty was tempted to up his weight and try some new things out. He couldn't go to his membership gym since they most likely wouldn't recognize him, so that left the one the bodybuilders used at the beach for show or the community center. He took a bet with the latter as he figured there wouldn't be too many people on a hot day.

On his way to the gym, Mnty couldn't help but notice a few folks glancing at him. With not much conservative clothing, he was reduced to wearing a simple tank top that clung to his large V-tapered frame and the workout pants. A squirrel that worked at the library couldn't help but size him up underneath her shades and flush a bit when he looked in her direction. One genuine smile later and she broke eye contact and ran off in a huff. Mnty blinked in surprise and then shrugged his shoulders, going off on his way.

After arriving at the community gym, the caribou got a few more looks, especially from the clerk, a rather large bellied shark who looked too bored to be here as he waved a fan at himself for some semblance of cool air. After Mnty got the shark's attention, he stammered and looked at him in bewilderment.

"U-uh...how can I help you? Don't you think a guy your size should be at one of the better gyms or something like that?"

Mnty shrugged his shoulders. "Eh, I think I'll be fine. Just aiming to do some running today...and my car is broken, yeah, that's it." He finished, adding the last bit. The shark blinked and nodded in response, allowing the caribou to go his merry way. Fortunately, the gym seemed to be somewhat empty except for a few surprisingly large folks for a community gym. After putting away his duffel bag, he spied a reindeer slipping off a tank top and heading off into the men's shower/bathroom with lecherous look. Mnty's cheeks turned pink for a few moments before he left the room. The caribou couldn't help but stare at the reindeer's round, firm and fleeting rear left out in the open due to his spandex shorts clinging to his waist and crotch. Mnty felt the monster stir in his pants snaking downward past his knee and covered himself with his hands.

"No, not here..." he thought.

Mnty ran for the treadmill as fast as he could. He decided to keep it slow and just run to take his mind off of things. He had an entire week of this coming up and he didn't want to deal with this, he couldn't. As much as the size was enjoyable, having it at all hours was a hassle. Even the large body was a bit of a problem in its own way. He had to spend money on new clothes, get work out supplements if he wanted to keep this figure, all sorts of things. While his mind drifted, Mnty didn't notice someone bound up to the treadmill next to him and start running at a quicker pace once he turned on the machine.

A rather burly orca huffed as he started running, arms raised up and down with every step he took. Mnty's eyes drifted to his enormous frame. The orca's monochrome frame bulged out just about everywhere and he could have sworn he was seeing a package down there just as big as his, if not even larger. The caribou suppressed a moan as he tried not to ogle the gym patron. As he continued running, he started to praise any diety other than Kaji once he stopped a few minutes later. He then cursed that same deity when he noticed that the orca had just stopped to take off his over-armor shirt and put it on the handles of the treadmill and continue running. Mnty was effectively tortured seeing the sea mammal's pectorals jostle and bounce while he ran, sweat running down his frame and the slightest hint of that massive package jostling about as well.

He couldn't help but adjust himself while attempting to cover the act with one fuzzy arm. The minutes passed as the large caribou continued ogling the orca beside him, the monochrome male seemingly unaware of it all. After close to an hour of running, Mnty got off the treadmill and slowly walked to the bathroom, leaving a trail of a thick, clear substance. During the whole run, the caribou's shaft had been leaking pre cum and after simply telling some people it was sweat, he made a break for the bathroom.

After closing the door in a flurry and making sure that the place was empty while still leaving a sticky trail of pre, Mnty shut himself in the nearest bathroom stall and put his pants down. The caribou bit his lips in some effort to suppress his moans. He pinched his thighs, flexed his muscles, anything to stop himself from going over the deep end. Nothing seemed to work as that almost four foot shaft continued drooling and spurting pre like a broken faucet. His fingers twitched, his mind begging him just to get it over with. He couldn't, who knows how large this thing could get if he did?

"Nnnff, I can't...but I have to..." he grunted. It was the only way to calm down.

Mnty grabbed that pulsing pole with both hands, feverishly pumping himself and watching his pre splatter against the floor and the door of the stall with abandon. Each spurt was like an orgasm in itself as that member and the basketball sized orbs underneath gurgled and sloshed with the caribou's blessed virility. Mnty put that body to use, his legs buckling from his run and the pleasure and using every bit of his strength to masturbate as fast as possible with a tool that he couldn't even wrap both hands around. He thought about the reindeer and the orca before and couldn't resist letting out a deep moan. His hands became slick with pre, making his grip slippery and difficult, but the mental image of the attractive orca over him the idea of him presenting himself was just what he needed.

Mnty exploded in a barrage of white, load after load of cum slamming against the bathroom stall door to the point it shook with the pressure from his orgasm. His eyes were close to rolling to the back of his head as he was releasing everything he had in there at the moment. It took close to twenty minutes for Mnty to finish, and when he did, nothing was left that wasn't covered in white in the stall. The two walls, the door and the floor were giving a new coating, including Mnty's own body. Mnty lifted himself up from the toilet, dashing towards the shower once the afterglow died. He had to get himself clean and leave before it started again. As he dived into the open door showers, the tingling feeling started up again. The hot water doused and cleaned him, but it didn't make him forget what was going on.

"Oh come on, please stop...I don't want any more, I almost destroyed a bathroom stall..." Mnty whined.

And yet, his cock disobeyed. It greedily grew larger as if it was a pool toy exposed to water; nearing close to eight feet in size while soft, his balls grazing the ground and as large as a few watermelons. Mnty groaned audibly, leaving the shower and the mess in the bathroom for someone else. He stumbled out of the gym with his workout pants on and his duffel bag in front of his crotch, but it didn't do much to deflect the occasional stare. It was nothing short of a miracle that he got home without anyone asking him about the events at the gym. Mnty closed the door behind him and let out a sigh of relief, closing his eyes once he was in the safety of his home.

"Well, took you long enough to get home. I was thinking you were gonna go for another round in an alley or something." Kaji snickered, sitting on the caribou's couch.

Mnty opened his eyes to see Kaji waving at him. "You! Fix this!"

Kaji shook his head. "Nah, you still got a week. I'm just here to help you take the edge off is all, you're on your own afterwards~. I'm sure that run back home must have gotten you somewhat riled up." He grinned.

Mnty huffed, letting his bulge out of his grip. The damn thing was nearing the floor at this point and his pants had done an amazing job of supporting everything. Once he got rid of them, that cock slammed against the ground. The pure feeling of cold floor to shaft had him groaning despite his present company. Pre started to seep out of that greedy cock once more, causing him to groan out of annoyance. Why did he have to be so sensitive?!

Kaji let out another laugh as that cock lurched to life along Mnty's apartment floor. That thing was near ten feet while hard and judging by the orbs he was dragging behind him, he could probably lounge on them if he wanted to. Kaji lifted himself off of the couch, wiggling his shorts down and letting his two foot cock free to flop around. Of course, it didn't take the deity to match Mnty's current size and even surpass that by a bit. While a few feet away from him, Kaji nudged his length toward Mnty's own.

"Come on, just unload into this." Kaji suggested.

Mnty didn't have much of a choice. It was either this or he flooded his apartment. Mnty tried to adjust his cock from just the base, slowly thrusting himself into the head of Kaji's own for something to fuck. Mnty slowly pounded and forced that cock into Kaji's, shuddering at the sudden warmth of it all. Pre cum burst from the caribou and into the mutt, Mnty groaning and huffing as he legs were starting to give out just from the first few seconds. With the equivalent of a hole and a place to dump his load, he wasn't going to complain. Kaji sat on the floor, grunting and squirming at every thrust and pound into his cock from his horny caribou friend.

"Ooof, you're really productive tonight..!" Kaji grunted, feeling foot after foot of Mnty sink into there. The apartment was filled with the sounds of sloshing and gurgling as the hyper endowed caribou sunk all of his strength and lust into getting himself off to end this once and for all. Each sticky burst of pre had enough volume to probably fill up a hot tub judging from the excess that leaked from Kaji's cock. The mutt had to willingly keep himself from letting anything out for the sake of keeping his friend's apartment clean, but it seemed Mnty couldn't even do that himself.

The caribou's huffs and groans, however, were like music to his hears as he just kept fucking and fucking until he reached his limit. With one final groan, a torrent of white spilled from the caribou as those nuts bloated with size, unloading into Kaji and causing him to pant from the sudden rush of seed into his own orbs. Even though Kaji got the brunt of it, he couldn't stop any of the excess simply erupting out and covering the floor in cum. It simply flooded into the apartment like someone had left the water on and it overflowed rapidly.

"N-no..." Mnty whimpered, forced to stay in place from the pressure of each enormous load.

It seemed to go on forever. He closed his eyes, body locked in place from the waves of pleasure as he tried to empty himself right down to the last drop. When he tried looking at Kaji for some consoling, he couldn't see anything but a pair of fuzzy black nuts swelling higher and higher with each orgasm. Finally, it seemed to end close to an hour later, Mnty left a pile of panting caribou on his own cock while Kaji lifted himself up. Those nuts of his neared the ceiling and seemed to shrink within the blink of an eye.

"Ahh, that's the ticket~" Kaji purred, patting his own cock.

Once he retreated to his usual two foot size, the mutt couldn't help but feel himself a bit down there. A gentle squeeze of his nuts was met with a dense amount of seed. He couldn't even have the surface push against his hand without a few stray loads of seed spraying over the already coated floor. Wondering about Mnty's condition, Kaji glanced towards the caribou to see something he wasn't expecting.

"W-why hasn't it stopped?!" Mnty whimpered.

Still trapped in place by his expanding endowments, he was forced to actually stand and spread his legs, no thanks to his nuts. The two fuzzy brown orbs had continued to swell and produce more and more cum until their circumference left them hitting the ceiling, the walls and the apartment door, almost at a dozen feet high. Mnty huffed, his ten foot shaft still leaking cum profusely onto the floor. Kaji stared at his incapacitated friend with a curious look.

"I...don't think that's supposed to happen. Maybe we should just let you blow, maybe it'll wear down." Kaji suggested.

Wear down!? Mnty was not one for coherent words or emotions, but that didn't fill him with much joy. He leaned back onto the swell of his nuts, hearing them gurgle and slosh with every second that passed with a sense of pleasurable dread. He couldn't deny that seeing himself bloat larger and more virile with every load was the best thing to him, but what if it never stopped? Even as he tried to think, the flow of white just kept going without end. The flow started to pick up once Mnty applied pressure to those cum factories with his own body. The apartment began to flood bit by bit, causing Mnty to lose his footing and almost fall. He closed his eyes and wrapped his arms around what he could get with that greedy, drooling behemoth and willed it to not ruin his apartment any more. Some of the loads slammed toward the ceiling, taking some of the plaster with it as well.

And yet, in one blink of an eye, it seemed to stop.

"Okay, I think it's getting a bit out of hand, let's help you out here..." Kaji grumbled, scratching his chin. When Mnty looked at his shaft, he'd see a large condom applied around the head of it, each load making the material flail and slosh around with cum. He let out a sigh of relief that his home wouldn't be destroyed, but he wondered if the thing was durable enough.

"W-will it-"

"Yup, least until that's over. How long that takes, I dunno. Could take a week, months even. But for now, I think this might help." Kaji suggested. With a snap of his fingers, Mnty's size would diminish. He didn't lose his muscular frame, but that cock seemed to flinch back into the single digits, leaving the caribou with a five foot cock and the condom still attached and sagging as Mnty kept unloading. The deity was able to reduce the size of everything, including those boulder sized orbs behind him, but Mnty still felt like he could barely move even though they swung almost right between his knees.

"Mmf...not that I'm not grateful, why can't I get s-smaller? Ahh, that's actually kind of good now~" Mnty started, occasionally stopping to enjoy the feeling of his output. The condom had dropped to the floor during their conversation and slowly began to take up space with every spurt he produced.

"Dunno. I think it got a liking to you. Seems like it might be permanent."

Mnty blinked at Kaji for a few seconds. Before he could make a rebuttal, the mutt disappeared in a flash of light that also seemed to restore the apartment to its regular condition. Mnty's jaw slacked for a few moments until he discovered a note attached to the still growing condom.

Still really sorry, but enjoy the junk and your summer, even if it is permanent! I'll try and find a way, don't worry!

-Kaji

Mnty stared at the note, a mix of emotions flying through his face. The first was an angry scowl for letting this happen. The next was a look of confusion as he stared at the ceiling. He didn't exactly have anywhere to go for the next few months and Kaji did the best he could. The next was another look of bliss as he patted his cock which spurred on an especially thick load, making the bean bag chair sized condom slosh and jiggle around. He was gonna pay him back for this, but for now, he'd have to deal.

"Now, let's see if I can get to my laptop...gotta get some new clothes to fit all this."