For Bronystories

-Ponies: Greed-Grown Spike, Rarity
-Fetishes: Hyper, Cock/Balls growth, Cum Inflation, Slightly non-consensual(I guess?), Bondage, and some silliness towards the end.

----------------------------------------------------------------------------------------------------------------------------

It was about an hour past sunset in Ponyville on a very special night; Nightmare Night, that is; and already, the town was buzzing with fillies and colts out collecting candy from the various houses. Over at Rarity's home, however, the unicorn had yet to leave, just finishing her costume now.

"Ah, perfect!" Rarity smiled at herself in the mirror, quite proud of her near-perfect Bride of Frankenstallion costume. "I'll be the most glamorous mare out, this evening!" she thought out loud, before she heard her door suddenly swing open, preceded by a bang. Quickly trotting over to the main room, she gasped at the sight before her: A ten-foot purple dragon standing in her doorway, quickly identifiable as Spike, though he was quite different from his usual appearance, seemingly caused by the full moon in the sky.

"Spike! What's gotten into you?" Rarity shouted, not sure whether to be angry or fearful towards the huge dragon, who seemed to have gorged himself on candy, judging by the various colored splotches around his mouth.

"Spike want Rarity!" The big dragon growled in reply while his eyes fixated on the unicorn, his voice quite deeper than its usual tone. As he approached, Rarity raised an eyebrow, quite confused as to what he meant by that, though her question was quickly answered as Spike came closer, his large dragon-member flopping back and forth between his legs and quickly hardening.

"Oh, don't tell me you've become greedy again, Spike!" Rarity groaned, her cheeks blushing now as she watched that big shaft harden more and more, becoming quite distracted by it for a few moments as the huge dragon came right up in front of her now.

"Spike want..." Spike growled with a bit of lust in his voice now, while his claws reached for Rarity's flanks, making grabby motions with them. Just as his claws came into contact with the mare's coat though, he doubled back and roared in pain as a hoof smacked him square across the cheek.

"That is NOT how you seduce a lady, Spike!" Rarity glared up at the huge dragon, who was now holding his snout with both hands and looking back down at her with a bit of a frightened expression. “If you can’t behave yourself, I suppose I’ll just have to impose a little restraint upon you.” she smirked now as her horn glowed, levitating a few strips of measuring tape from a nearby drawer.

Minutes later, she had the overgrown Spike tied down quite securely; his wrists both bound to support beams and his ankles tied together, leaving him at the mercy of the unicorn, who had partially removed her costume in anticipation of what was to come. Growling anxiously, Spike pulled at the yellow tape holding his wrists, though he stopped only moments later when he felt Rarity brush against his waist.

“Spike, Darling, please calm down, will you?” Rarity slid her hoof up Spike’s side and stroked over his twitching erection, causing him to growl softly. “I cannot service you if you’re going to be uncooperative. Do you understand?”

Spike grumbled a bit from the annoyance of being unable to move, but he couldn’t deny the soft pleasure that Rarity’s hoof was providing, only causing his erection to throb a little harder. “Spike...want…”

“Mm, settle down, my big dragon. You’ll get it soon enough.” the unicorn replied in a softer, more sultry tone while she leaned in closer to the huge erection, gracefully sliding her tongue out and slurping over the tip of it, while her hoof stroked lower down the shaft, closer to the base. “Hmm...he tastes different than usual.” she sighed contently while her tongue circled the tip of Spike’s member, feeling its steady throbbing against both her hoof and tongue now.

“Rrrgh...Rrrrr…” Spike only growled lustily in response to the gentle teasing, keeping his eyes on the mare while his struggling slowed to a stop, soothed by the light pleasure Rarity was providing. Already, a large drop of precum escaped the tip of his erection; his balls churning already, quite eager to release the large loads they contained.

As her tongue brushed over the slit of the dragonhood, Rarity blushed lightly, finding the taste to be much stronger than usual. “Mm...how delightful…” she softly spoke, slurping a few more times over the orifice before her horn began to glow once more. “However...mm, I’m afraid I’ll have to restrict that for now, my dear Spike...I’ve got a lovely plan for you.” she licked her lips as a small belt levitated over towards the dragon, moving down between his legs and wrapping carefully around his ballsack, before latching and tightening; the weight of the belt pulling the dragon’s orbs downward and keeping them constricted. “If that textbook on dragon reproduction was correct...you should be unable to cum, so long as your testicles are unable to pull closer to your body.”

“Spike wanna cum…!” Spike growled, pulling a bit at his bindings again, though it only seemed to tighten their grip, due to how they were tied.

“Like I said, my dear...you’ll cum soon enough.” Rarity smiled up at him, bringing her hoof back to his twitching shaft and stroking up and down its whole length, while her other hoof lightly brushed over his hefty balls. “I promise you’ll enjoy this very much though, my big, sexy Spikey-wikey.” she winked before leaning back in again and resuming her soft licking and slurping to his shaft, dragging her tongue over the first few inches of it now instead of just the head.

As the teasing pleasure returned, Spike relaxed a bit once more despite his pleased growls, though out of the corner of his eye he spotted something shiny; turning his head to see a box of jewels opening up with the glow of Rarity’s magic, before a stream of gems began to rise up from the box in single file and float over towards him. As these delicious-looking gems floated over towards him, his growls became a bit more lustful as the sight triggered his greedy instincts; thoughts of stashing those gems away filling his mind, which caused his growth to continue.

However, instead of his overall size increasing, just a single part of him seemed to swell, much to Rarity’s delight. Her cheeks blushed softly as she felt Spike’s throbbing length become even harder and begin to swell, gaining length and girth as she kept teasing him with the gems. “Mmnh, that’s it, my dear...grow for Rarity.” she softly moaned, feeling quite aroused herself as she watched Spike’s endowment swell and swell past its normal 14-inch length, gaining an inch every few seconds as it kept throbbing against her tongue and hoof.

“Rrrhh!! Spike...WANT!” Spike growled louder now as he squirmed and writhed against the bindings holding him, his eyes fixated on those floating gems as they circled around his head, sparkling and shimmering under the light from the ceiling. His mind was torn between the teasing pleasure Rarity was giving him, and the allure of those sweet gems, a battle between his lust and greed.

"Rarity is certainly wanting, too..." Rarity sighed happily as she kept slurping and stroking Spike's expanding length, growing past 18 inches as it continued to throb and twitch in response to all of the mare's teasing. "Yes...keep growing for me, my big, hunky Spikey-wikey!" she closed her eyes while her free hoof slid down between her legs and began to rub over her now very moist sex; her clit flaring and winking repeatedly from her lust.

All the while, Spike continued to squirm and writhe in pleasure, his hips lightly bucking against Rarity's mouth and tongue as more precum splashed her lips; his shaft still swelling and swelling as the gems floated in front of his face. At the same time, his balls seemed to be bloating too, growing beyond their softball-size to keep up with the proportion of his member. The gems circled overhead for only a few moments longer, before returning to the box that they originated from, leaving Spike with only the teasing pleasure down below to think about.

As he glanced back down though, his eyes widened to the sight of his own erection, which was now just over two feet in length, with a very impressive girth to match, as well as a pair of grapefruit-sized testicles. With their new size, the belt around them had stretched as well, leaving them a bit tighter around the two orbs for the moment.

"Ahh...perfect." Rarity sighed as she pulled her head up, licking her lips of the warm precum that had splashed them. "You've grown so wonderfully huge...mm, Spike." she softly moaned, still slowly stroking her hoof up and down that monstrous shaft, feeling it throbbing even harder than before. With that, she slowly stood up and climbed atop the bound dragon, grinning lustfully towards him as she pressed back against his member, lightly grinding her now soaking wet cunny against it; her clit winking against the tip of it as well, only teasing Spike with more pleasure.

Despite his pleased growls, as well as the constant throbbing of his shaft against the mare's snatch, Spike continued to writhe a bit, pulling once more against his bindings. "Rrh...Spike...want...butt...!" he grunted, trying to move his shaft by wiggling his hips, though Rarity was quite firmly pressed against it.

"Anal? How vulgar." Rarity's lustful grin quickly became an annoyed glare in response to the dragon's demand. "With how swollen your shaft is, I don't think it would even begin to fit inside my posterior!" she glanced back at the dragon's overgrown length, continuing to lightly grind against it, rather enjoying its steady throbbing against her sex.

"Nnnh...Spike...want." Spike's growls became a bit softer for a moment as he looked up at Rarity now with a pleading look on his face, still lightly thrusting his hips as much as he could, grinding and rubbing his engorged meat between the mare’s legs.

Rarity hesitated as she saw that cute look on the big dragon’s face, biting her lip gently as well, while her clit winked a few more times against the dragon’s throbbing shaft. “Oh...I suppose I can at least try, for my big hunky dragon.” she smiled and reached a hoof up, gently stroking it over Spike’s chest as she repositioned herself a bit, feeling the tip of the dragonhood sliding upward and pressing against her rear now, smearing a bit of warm precum over her backdoor.

“I can’t exactly guarantee I’ll be able to fit it, though…” she looked back again as she began to lightly push against Spike’s member, prodding it against her snug entrance; feeling like it was indeed much too large to fit inside without a good bit of assistance. “Ah...ngh!” she grunted after giving a good push, managing to push the tip of that huge shaft inside her, causing its owner to growl lustily, feeling the immensely tight squeeze around his cock.

“Rrgh...tight!” Spike grunted and closed his eyes, his hips only bucking more against Rarity, forcing another inch of his member inside her rear and making her gasp from the resulting pain and pleasure.

“Ah! S-Spike...calm down!” Rarity blushed even harder as the dragon tried to force himself deeper inside, another surge of pain coursing through her rear. Already a good six inches inside her, she pressed her hooves down a little more firmly against the dragon’s chest, attempting to stabilize him a bit. “I cannot...nngh...take you in properly, if you’re moving so much.”

Spike however was too lost in his lust to acknowledge the mare’s words; pulling even harder at his bindings as his member throbbed wildly within the mare’s snug backdoor. “Rrgh...Spike...want…!” he growled, and in one surge of strength, his arm lurched forward and snapped the measuring tape that was holding it, immediately grasping most of Rarity’s waist with his large hand.

With a gasp, Rarity leaned back a bit, though her movement was immediately hindered by the dragon claw holding her waist, which began to forcefully move her body up and down. “Nngh, Spike! Stop right this, ah, instant!” she groaned, though the feeling of that huge dragonhood forcefully pushing in and out of her rear was feeling more and more pleasurable with each passing moment; the dragon’s precum smearing all along her insides and helping to make each thrust that much smoother.

Completely ignoring her cries, the lusty dragon pulled forward with his other arm and snapped its binding as well, now holding Rarity's waist and torso with both hands and firmly thrusting her up and down on his shaft, using her like a living fleshlight! "Rrrgh...! Rrrrh!" he could only growl out lustfully now from the overwhelming pleasure his engorged dragonhood was receiving, making it throb harder within the mare's tight rear, about to erupt any moment now.

Once the initial pain subsided, and more precum smeared along her insides, Rarity's cries of pain quickly turned to blissful groans; the thought of having the huge dragon use her like a sex toy managed to turn her on even further. "Oohh...Spikey...Wikey...!" she gasped, closing her eyes tightly while her body was jerked up and down; trying her best to squeeze her anal muscles around Spike's throbbing meat.

Scarcely thirty seconds of this rough sex passed with Rarity's groans and Spike's growls filling the room, before the horny dragon's pleasure finally peaked, causing him to roar out blissfully while his member began to erupt inside his mare's rear. "Rrrhh...RRAAAHH!" Spike leaned his head back as he roared, forcing Rarity down onto his giant shaft and managing to sink roughly three-fourths of its length inside her, while the sheer force of the flow of liquid had managed to snap the already slightly-loosened belt right off of his balls, unleashing a river of seed into the mare’s rear.

"Ngh! Aah!" Rarity's eyes shot open as she felt this rush of dragon sperm flow into her, flooding her insides in seconds and beginning to inflate her stomach from the sheer amount being pumped inside her. "Spikey...ngh...p-pull out!" she gasped as she felt her belly bloat and swell with the dragon's cum, growing bigger and rounder with every throb that huge member gave.

Spike continued to cum though, lost in the bliss of his powerful orgasm as he pumped Rarity bigger and bigger; a large pressure starting to build up within her as his seed was packed tighter and tighter inside her. In only a few moments, her belly had swollen considerably larger than even a double pregnancy, though before she could swell any bigger, Spike's hands suddenly let go of her body, letting free the pressure within her.

"Ah, SpiiiiIIIKEE!!" Rarity shrieked as she suddenly felt something propel her from below, sending her up and off of Spike's throbbing erection as his hot seed gushed out of her rear, essentially blasting her upwards from the force of the pressure being released. Screaming all the way, she was propelled a few feet into the air, leaving a stream of dragon cum behind her which splattered all over the floor in a big streak, before she finally landed in a pile of fabrics eight feet away from Spike.

"Agh! Nggh..." she grunted from the somewhat rough landing, laying belly-up on top of the fabric while even more of Spike's cum gushed forth from her abused rear, splashing onto the floor in front of her. "Sweet Celestia...what an orgasm..." she panted heavily while trying to grasp everything that had just happened in the past ten seconds, looking over the streak of white between her and Spike; her cheeks blushing once more.

Spike meanwhile was growling contently while he caught his breath, basking in the afterglow of his powerful orgasm. His erection still stood proudly above him, throbbing and twitching as the last of his seed dribbled down its length and to his swollen balls. Both his and Rarity's attention turned to the door however as it opened, followed immediately by a sharp gasp from a familiar purple unicorn.

"Spike! Rarity! What....what happened here?" Twilight's facial expression quickly changed from surprise to embarrassment while her cheeks flushed a dark purple; her eyes darting back and forth between the huge, hyper-endowed dragon, the streaks of seed splattered everywhere, and the other unicorn who appeared to be laying in a puddle of seed.

"Mmnh...oh, just some lovely fun with Spikey, here..." Rarity giggled, levitating some of the fabric and cleaning herself up a bit with it. "He sure can be rough and demanding...but I've never seen any stallion cum as hard as he does!" she smirked a bit over towards Spike, before looking back to Twilight again. "Would you care to join us, Twilight darling?"

LE END

Author's Notes:

Yes, that ending orgasm scene was shamelessly copied from Space Pirate Sara.