A Big Surprise

Story by Luther-Bat on SoFurry

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It's a dragon's birthday and his mate intends to give him a gift he won't forget.


A Big Surprise

By Luther

Today is Denyen's birthday. His mate, Luther, has an idea for something he can do for the dragon. He'll need plenty of space and some particular equipment, though and while he has neither he does know a certain lemur that does. He's sure that he can borrow it if he let the lemur watch. He'll also need a victim, willing or otherwise. Luther has just the candidate...


A lean and rather handsome white tiger stood outside of an old abandoned aircraft hanger nearly seven miles out of town. The sun was still high enough in the sky but it would be getting dark in a few hours. Normally he would never be out in a place like this on his own but he came at the behest of a friend who was planning a birthday surprise for his mate. Making his way through the defunct and overgrown gates he muttered under his breath at a thorny bush that caught his jeans. He couldn't help but wonder what Luther could possibly have planned.

Rounding a particularly weedy corner brought the bat in question into view. He wore cargo pants as usual with a green t-shirt with the sides cut out for his wings. The two waved to one another.

"I'm glad you could make it, Tye." The bat called as the distance between them closed. "You're a very important part of the surprise. Please, come inside, there isn't much time before Denyen gets here."

The tiger known as Tye was led through the hanger door. His eyes had to adjust to the darkness inside. The space was almost pitch black as all of the windows were carefully boarded up. The only light, in fact, came from a couple of dim lamps focused on a steel table near the center of the hanger. "Sorry about the dark" the bat seemed to have picked up on Tye's apprehension "but it's crucial, you see." As they approached the table, Tye spotted a glass of pink fluid resting on it. Curiously enough he managed to make out a large letter ‘X' in yellow tape on the floor nearby.

"What's all this?" The tiger found himself asking in confusion.

"Why, this is your part of the show."

"Wha-"

"Drink this." Luther had snatched up the pink stuff and held it at Tye.

"Wait... what? What's in it?

"It's for your own sake..." he could tell this did not assuage the suspicious tiger. "Look, trust me here, okay? Would I give you something dangerous?"

Tye figured it was incredibly stupid taking it or, hell, even being here in the first place. He also couldn't think of any reason the bat would have to hurt him. So reluctantly he took the concoction and downed it. A moment passed as he tried to get the chalky taste out of his mouth. Tye was about to say something along the lines of ‘now tell me what this is about' but he didn't. Instead, the words sputtered as his mouth went numb and everything started spinning. He blacked out and fell. Thankfully Luther was there to catch him.

As the bat shifted his weight to better support the kitty, a nearby door opened. Light flooded through it and out stepped the figure of a lemur in a lab coat complete with long, bushy tail following behind. It stood there with its hands in its pockets and called out:

"So this is your volunteer? I'm amazed he signed up for it considering what you have in store for him."

"Quinn, I uh... didn't exactly tell him why he was here."

"Figures. Well that just makes him gullible instead of stupid."

"Nah, he's a good guy. Besides, I think some darker part of him will enjoy it. Speaking of which, I'm going to get him set up. You might wanna start warming up the machinery."

"You're the boss..."


Some time passed as the bat went through a mental checklist. He was deep in thought making sure everything was perfect. He marked the position, check. Tye is ready, check. Quinn is on standby in the control room, check. He tried to remember anything else. Of course! Drains are open, double check. This would be quite a treat for his mate and he took a moment to relish the anticipation. Luther felt himself getting hard at the thought but his reverie was interrupted, however, by his cell phone going off. Luther didn't even need to check who it was. "Alright!" the bat called out to whoever could hear him "it's almost show-time!" He answered the phone.

"Hello?" Luther said as innocently as he could muster.

"Alright, I'm here. Are you sure this is the place? I only see an old hanger." It was the sweet voice of Denyen.

"Oh yes, the hanger's where you want to go. Around the corner you'll find the side entrance, the door is unlocked. I'll be waiting." The bat hung up. Denyen didn't take too long, but it sure felt like it as Luther got into position. An orange square of light informed the two miscreants that the door to the outside was opening and the dragon had arrived.

"Denyen! So happy to see ya, hun!" Luther's voice echoed over the loudspeaker he had set up. From his reaction the dragon was taken by surprise. "Just close the door behind you, step into the light, and you'll get your present." Luther flicked a switch with a claw and a spotlight above sputtered to life. It shined down from the ceiling onto a crudely made ‘X'. Luther watched with bated breath as the lovely dragon complied and crossed the darkened floor. "That's right, stand right on that spot. Don't worry, you can trust me..." As Denyen reluctantly did so Luther opened the protective box covering a rather large an ominous looking red button. The bat had to be quick as Denyen's apprehension about this place was obvious.

Off in a corner of the hanger, in the dark, stood a large piece of equipment that looked like something straight from a B-rated science fiction. The closest approximation would be binding several large telescopes together to form a cluster of lenses. All of such lenses currently reflected a handsome blue dragon. He was now in place and Luther wouldn't keep him waiting. "Ready?" he asked Quinn, standing obediently to his side "Firing in three... two... one." Luther pressed the button and held his breath in anticipation. Denyen always talked about role reversal and the bat was going to give it to him in spades.


A bright red beam shot from the device in the corner and found its mark on the dragon's chest. Denyen stumbled slightly, more from shock at actually having a laser fired at him than anything else, but he recovered. His head felt fuzzy and light. Then the sensation started with a tingling in his chest and spread throughout the entirety of his body. His heart started racing and he began to pant. Denyen was confused and slightly afraid to say the least. Panic subsided when his attention was sent elsewhere. The clothes on him began to feel tight around the chest, arms, and thighs. Whatever fear he first had was quickly being replaced by a kind of strange pleasure. It felt good... really good. Involuntarily, he flexed his muscles but when he relaxed them again the bulges they made didn't go back down. When he saw the legs of his pants start to ride up he knew what was happening to him.

Ever the smart dragon, he thought ahead and unbuttoned his pants before they became too tight. Glancing down he risked a guilty pleasure to see that everything was, in fact, growing. The tingling had stopped and was soon replaced with sensation of roving warmth and pressure not unlike being caressed by a thousand invisible hands. "Murr... no wonder he loves it so much... it feels so... good." he confessed to nobody in particular. Denyen let his head hang back a bit as he closed his eyes and let it wash over him. He felt himself slowly inch taller. He opened his eyes. He looked to be about six and half feet tall by now... make that seven... seven and a half. The dragon heard a ripping sound from below and saw that his pants, tightening around his legs until now, had given up the fight. Another tear signaled that his shirt had also surrendered to the rapidly expanding dragon.

As his clothes slowly split and tore themselves to shreds Denyen let out a low growl of pleasure. Rising higher with each passing moment, he hit eight feet... nine... ten... eleven. All the while he could feel his muscles pushing outward, defining themselves. The dragon topped his climb at around twelve feet. "Wha-?" started Denyen. He was surprised at a weight between his legs. Heavy, draconic balls dangled there, easily the size of oranges. Still panting slightly, Denyen could feel a pressure welling in them. It wasn't from the growth but from a deeper, more primal urge. The mere thought of using his new, powerful body caused his cock to spring to life. A growth-charged surge of blood brought the now enormous organ to full attention within seconds. Newly formed drops of pre-cum fell and spattered onto the floor.

There he was: a veritable beast in blue and he was in need of something to occupy himself with. Cue Tye. A second shaft of light from another fixture illuminated the center of the hanger some twenty feet away from the twelve foot dragon. It highlighted a steel table propped at a forty-five degree angle. On this table, writhing slightly in his leather restraints, was a cute little white tiger. A crackle came over the loudspeaker followed by the familiar voice of the dragon's mate: "Happy birthday, hun." It said "Here's your present. Go ahead and unwrap him."

This was all the encouragement the horny dragon needed. He now had a focus for his lust. Denyen strode towards the helpless tiger whose struggling only intensified as the beast grew near. Tye was lying on his back, bound with his legs spread apart as if to accept something large. His arms, legs, wrists, and ankles were kept in place by strong leather straps. Desperately and uselessly the kitty tried to cover himself with his tail. It was cute in a pathetic sort of way. Tye saw what had just happened and as the dragon neared he got a better understanding of Denyen's new magnitude. By looks alone the massive, throbbing dragon cock had to be a good sixteen inches... there was no way it would fit inside the helpless Tye. Denyen obviously thought of this as well, stopping himself and looking around for some kind of reassurance. "It's okay, dear." Luther's voice returned. "I've made sure he can accommodate you. Go on and have your fun." The dragon gleefully turned to his present.

The feline's eyes were glued to the erect and needy dragonhood bobbing so ominously in front of him. Denyen enjoyed every moment of the build-up. He bent himself forward over the tiger and just looked at him like something to be enjoyed. He grabbed the tiger's arms with his large claws, pinning him further and adding emphasis on the fact that he was going nowhere. Tye, meanwhile, was doing everything he could to avert his eyes but failed as they were always drawn back to the dragon... or certain parts of him. These massive parts, leaking pre-cum like a faucet, were growing closer and closer to the back end of him. He gave a slight yelp as the enormous tip was touched to his tail-hole. Denyen was in no mood for foreplay. He wanted sex, he needed it. He needed to fill the tiger with himself.

Abject terror gripped Tye as he saw the giant member, slicked with an absurd amount of pre-cum, ready itself for entry. He thought that he would surely be split by its size. He whimpered slightly and felt a great pressure against his hole as the dragon pushed forward. A gasp and a shudder came from the tiger as the head popped in. Denyen began forcing his monstrous meat into the victim. For Tye, the initial shock washed away to be replaced with something that felt... good. He would imagine something stretching him so wide would hurt but, no, it felt good... very good. Tye's gasping became small yelps of elation as inch after thick inch was pushed into him. Denyen reached the ten inch mark and enjoyed the tightness of his toy. Further and further in the massive cock was driven in until at last, the entirety of it was hilted. Four inches thick did Denyen spread apart Tye's ring. Every weak struggle and every time the tiger clenched was a massage along its length. Lost slightly in the sensation, Denyen pulled out a few inches and began a harsh, rhythmic, pounding into Tye's ass. Denyen nipped lightly at Tye's neck and elicited a pleasured moan from the captive fucktoy. In and out the dragon pumped as he picked up speed and ferocity. Huge swollen balls slapped against the underside of the kitty's ass. This small pain fed into the dragon's pleasure and only fueled him to fuck harder, faster, and deeper.


"Wow, this is freakin' hot." Quinn exclaimed.

"Told you it would be" Was the bat's reply.

The two sat in a nearby observation room overlooking the entire scene. They had to keep the lights off; the last thing they wanted to do is draw attention from Luther's behemoth of a boyfriend. So, the two of them sat there in the dark with the lighted buttons on the control panel providing their only illumination. A noise brought the bat's attention to Quinn and he could see a hand moving furiously in the dark, the lemur's pants already around his ankles. Luther was quite forgiving of him, though, because he soon found himself joining in. The bat undid his pants and freed his own eleven inch cock, meager by comparison to the one proudly displayed in front of him. A thought crossed their minds of helping each other out. However, that would require ungluing their eyes from the wondrous sight in front of them. Neither could afford that.

After a moment the bat stilled his hand, he didn't want to enjoy himself too much. There was still more fun to be had.

"So, uh... did you make those modifications to the secondary emitters?"

"Huh? Wha?" came Quinn's half-assed reply.

"Did you fix the other beams like I asked you to?"

"Wha- yeah, yeah! Blue one is for increasing muscle mass, green is for genitalia, the yellow, orange, and purple ones... are best demonstrated rather than explained. The controls are right over there."

Luther saw it sitting off to the side, a newly installed panel of individually marked multicolored buttons. It was color-coded growth, a dream come true. A literal rainbow of options presented itself to him and he felt like a kid in the proverbial candy store as his claw hovered over it. He looked up at his mate still thrusting deeply into his victim and wondered which one to try first. Yellow is a good color. Luther reached for the button, his attention divided between it and his mate. Big mistake, if you pardon the pun.

You know that button, right? The big button tied to the main amplifier that was being using in ways it wasn't meant to be? It's the one with the black and yellow warning decal surrounding it. It's the bright, attention grabbing, red one with the bold white lettering that says ‘engage' written on it. Well, when one has a distraction as great as gigantic dragon tearing into a helpless white tiger with reckless abandon, that big red button just can't compete.

It's no small wonder then that neither bat nor lemur paid much attention to it. No surprise when one of them, not saying who, when reaching for the yellow one may have ‘accidentally' pressed it as well before muttering an ‘oops' that was only half genuine. Both of them, however, noticed the twin beams, a ruby red one in addition to the intended yellow one, lashed out and struck the dragon. Denyen was too busy to notice or even care. Neither of them got up to try and stop it. What could they do? They were far too busy pleasuring themselves to the thought of what was about to happen.


Pounding away, the frenzied dragon showed no mercy to what was his. The little tiger was lost in ecstasy and could soon stand no more. With a growl and a tiny roar his balls tightened and loosed a spray of sticky feline seed across his captor's chest. Denyen's next monstrous thrust, however, reduced the roar into more of a yelp as Tye arched slightly and another white stream spattered against the dragon's neck.

Tye rolled his eyes listlessly around in his head until finding the twin splats of cum he painted the large dragon with. It may have been the immense pleasure or it may have been his imagination but it looked like they were spreading apart. They were, in fact, moving apart as more chest, more neck, more everything was building between them. Tye saw this now and realized what was happening. "Bi- bigger?" was all he could manage to say.

The kitty was spent and as far as the dragon was concerned it was his turn now. Growing tired of the tiger's restraining position, Denyen sought to fix this. He pulled his swelling member out of his plaything, ran a claw along the leather straps binding him. A fuzzy thought entered the dragon's head: was he getting taller? It was soon dismissed as unimportant. He was not done with his toy yet.


Meanwhile, in the control room, Luther arched a brow slightly at what his mate was becoming. The bat had seen Denyen in both his anthro and feral forms. This, however, was looking to be something new and wonderful in between. The dragon's neck lengthened a bit and bent forward, swelling with new muscle. He hunched slightly in a way that reminded Luther of the colossal Tyrannosaurus Rex, of whose size the dragon was quickly approaching. The blue scales covering him gained a new luster. His claws became more pronounced, his teeth became longer, and even the pointy bits on the end of his tail grew a bit more wicked. The tail itself grew thicker and heavily muscled as a counterbalance to his slightly hunched stature. He was becoming, in a word, beastly, while developing a kind of animal magnetism. Yet, none of it was enough to rob him of a sense of regal poise. Suffice to say that this was making Luther's already throbbing member stiff as a board. Quinn wasn't complaining either.

Luther's eyes were invariably drawn the enormous pillar of dragon meat swinging to and fro. He watched it stretch and lengthen its way farther along Denyen's underside. He realized the rest of his mate was growing as well but he was fascinated with the appendage. It swelled past seventeen inches as Denyen bent over the twitching tiger, eighteen as he took his claw to the first of the straps, nineteen as he finished. "Bigger..." Luther chanted, urging him on and panting as he stroked himself "...bigger... bigger". Denyen's hand was large enough to completely wrap around the midsection of a now squirming Tye. The growing dragon passed fourteen feet in height as he did so. At fifteen feet he was bringing his toy up to him mouth. Denyen licked the miniscule Tye with his enormous tongue, using it to explore his chest, his leg, and his neck as the giant expanded past foot sixteen and seventeen. His testicles were swollen like cantaloupes now and showed little signs of stopping. He hefted the tiger to the tip of his engorged dragonhood, pressing his tail-hole against it teasingly. Denyen growled in delight at the sensation of Tye squirming on the end of his dick. Pushing slightly to test the resistance, Denyen was past concern on whether it would fit anymore or not. Besides, if a sixteen inch cock could fit why not a twenty four inch one? Make that a twenty five inch cock as it slowed its growth... twenty six... twenty seven. Reaching a staggering height of twenty feet the rest of him slowed and stopped its expansion. His cock was nearly two and a half feet long and seven inches thick. The fleshy orbs between his legs were essentially light blue basketballs filled with the need to release themselves. Denyen eyed the tiger hungrily and with such obvious intent as to make the little toy blush a deep crimson.

Luther heard a splattering and gasping sound to his side and smiled as the lemur finally surrendered and came all over the floor. The bat waited until the sounds of panting quieted.

"Quite a beast." Luther muttered in admiration from relative safety.

"So..." the lemur said between breaths "how do you plan on... shrinking him back down afterwards?"

"Shrink him? Why would I want to do that?" said the bat.

"Well, he has that magic, right? Couldn't he just... restore himself?" Luther could hear a hint of disappointment in the lemur's voice at the possibility.

"I'm sure he could" the bat responded "If he were still in his rational mind that is. I'm quite familiar with that look in his eyes; I find it so often in my own. The lust has a hold of him. He'll calm down eventually though... it's a good thing he's distracted too." A whistle of awe escaped his lips. "Glad I'm not that tiger."

Quinn's ears perked up but he hesitated, as if to speak, but ultimately said nothing. He only turned back to face the spectacle and resume stroking himself in the afterglow.


Denyen was close to his own release and yet he needed more to achieve it. The tiger was held aloft, encompassed by Denyen's claws, and positioned on top of the frighteningly enormous dragonhood. There was no hesitation or signs of remorse when the dragon pushed Tye down onto it. It was a credit to Quinn's serum that the tiger was still conscious after all of this. The little kitty was being stretched to impossible limits and yet he held firm. There wasn't the tiniest bit of pain either, only the mind-wracking pleasure of being speared alive. Denyen pulled Tye, nearly comatose with euphoria, up and down along his shaft. He huge dragon was using him like some kind of living sex toy. Denyen fell into a deep and heavy panting as he neared climax. A few more pushes and he would explode into the smaller being.

The dragon would be amazed if his wits were completely about him. His balls actually made a rumbling sound as they visibly tensed and relaxed several times in an attempt to ready themselves. It was an interesting sight akin to a pump building pressure or the final gurgling moments before Old Faithful erupted.

Denyen's head reared back and he roared in sheer ecstasy as he came. His grip around the tiny feline and his own cock tightened. Tye, feeling an immense pressure well up inside of him, began squirming as he started to inflate from the sheer volume of cum flooding into him. Such a tight fit around his ass left nowhere for it to go as his stomach ballooned outward. Eventually the pressure began pushing him upward. The dragon pulled him off of his still erupting member and let him drop the few feet onto the floor with a wet flopping sound.

If not for the mind blowing orgasm, Denyen would have wondered why he was still cumming. The truth was that he simply couldn't stop the gallon after warm gallon of dragon seed gushing into his lap and spilling onto the floor or the periodic gouts that flew across the hanger.


Amazed by what he was seeing Luther couldn't help but ask "Is this some kind of side-effect?"

"Um, the cellular amplifier was originally designed for enlarge various tissues for underdeveloped individuals." The lemur explained.

"Yeah?" the bat followed.

"Well it was also designed to increase sex drive and virility in males. Well, I thought I removed that in the mods... but it looks like it got stronger instead." he finished.

Pausing a moment "Well I definitely approve..." Luther answered, soon lost in thought.

Both lemur and bat jumped and ducked in a knee-jerk reaction as a spray of dragon seed splashed against the window. "Holy hell! That's like forty feet away!" Quinn shouted, expecting the bat to agree. Luther, however, was already lost again in the idea of being so... potent.

A resounding thud carried through the hanger. Both looked up to see that the dragon had finally exhausted himself and fallen backwards onto the concrete. Luther watched his mate splayed across the floor in his own sticky mess. He watched Denyen's chest heaving deeply in his breaths as he basked in a sex addled stupor. He watched the dragon's leg twitch slightly. He watched the dragon's spent balls slowly plump up as he rested, refilling and readying themselves again. None could argue that Quinn was wrong about the virility part.

"Alright, time for the second part of his present." The bat said to his companion in the control room. "You know what to do." Luther pressed another button on the panels arrayed before him. The heavy, automated hanger doors began to slide open on their hydraulic systems. Orange light spilled into the hanger. A sharp breath was Luther's only reaction upon seeing the light play across his mate's scales. He was absolutely gorgeous. "We're taking this outside." The bat informed Quinn.

"Hmm?" inquired the lemur.

"More room to grow." Said Luther "Reset the power level to what he received and prepare to fire again. I plan on joining him so hit me while he's still out. Then I'll wake him up to something nice, eh? I'll lead him out onto the tarmac and then you can wheel out the amplifier and have all the fun you want".

"Sounds lovely... you two are into some strange things, you know?" he laughed.

"Well, I admit it's mostly me but I think he's enjoying it too."

"I can tell." said the lemur, looking at the collapsed mammoth.

"Besides, just keep pretending you're not into this just as much." Luther smiled.

He paused and blushed a moment... "Guilty" he confessed.

The bat thought of hurriedly undressing himself as Quinn worked to reset everything, but instead simply opted to leave the belt and pants button undone. He wanted to experience the whole thing. Quinn and Luther exchanged a curt nod as the exited bat dashed out the door and down the steps, eagerly searching for the ‘X' that marked the spot.

When the lemur was certain Luther was out of eyesight he took a cautious look around him. A wicked grin cracked in the corners of his mouth. He decided to do a bit more to earn his reputation for mischief. With a sidelong glance to make sure the bat wasn't watching he began flipping choice switches and turning certain dials up a few notches. Now that he was running the show he was certainly going to make things fun.