Growing Up Fast

by darf

Rating: mature
Tags: My Little Pony: Friendship is Magic, Romance, Flitter and Cloudchaser, Sex, Rumble
Length: 20851

Sick of being a kid, Rumble gets a potion from Zecora, and 'grows up' with Flitter and Cloudchaser

Rumble doesn't feel like a kid - he's ready to grow up and get all the perks that come with it. So, he goes to see Zecora in search of a 'growing up' potion, all the while with his brother's 'friends' Flitter and Cloudchaser in mind. When the next day comes, Flitter and Cloudchaser stop by to check up on him, and he finds himself 'growing up' in a much different fashion than he initially suspected.

Fic for Cosmo, who is a cool guy.

Published 2012-10-11 00:40:01 UTC
Last updated 2012-10-11 00:40:01 UTC

Being Small

                    “I hate being small.”

                    Rumble glowered out the window in the direction of life in general. The sun and summer breeze were held away from him by a pane of glass and he felt trapped like an insect in a jar. In the distance he could see fillies and colts playing innocently and paying little regard to anything beyond the focus of their amusement. Rumble stuck his tongue out in disgust to no one in particular.

                    Closer to his house than the frolicking kids, Rumble’s brother Thunderlane was standing with a pair of silver and lilac pegasi. All three of them were laughing intermittently, and occasionally one of the pegasi would take a moment to give Thunderlane a pat on his shoulder as if to compliment him for a particularly ribald joke.

                    Rumble was supposed to be doing his homework. Instead, he was staring out at the world and feeling the haunting ache that had tortured him all summer long.

                    He wanted to grow up.

                    The bitter irony of a yearning for age and responsibility despite little or no regard for obligation (like the summer book report he’d left languishing in his backpack since last month) didn’t trouble Rumble in the slightest. The feeling of youthful malaise had been growing in the back of his head since the last bell of spring classes had sent him home to two months of supposed child-like frolicking. Instead he’d spent the first few weeks sulking and taking every opportunity solidify his resentment of the other ponies his age.

They’re so young, and stupid. I’m way more mature than any of them… it’s not fair that I have to wait to grow up.

                    Rumble directed the focus of this particular bout of ire towards his brother and his two friends – Flitter and Cloudchaser. The two pegasi seemed to never be far away when his brother left the house, and for some reason Rumble’s resentment burned brighter every time he saw the slender fillies hanging off his brother’s shoulder. Cloudchaser (the one with the swirly sheen of sparkling silver hair) let her hoof rest on Thunderlane’s back for a minute, and Rumble snorted loudly before yanking the curtains closed.

                    Being a kid, he decided, was the worst possible thing. Older ponies tried to tell him that the years of his youth were the most precious – that this was the only time he’d have to play and ignore responsibility, and of course he should appreciate it while he could, or he’d look back regretting growing up too fast… Rumble consistently shrugged these admonitions off as the testimony of sanctimonious adults blinded to the perfection of the lives they had grown into. Even if just to stay up late and have ice cream whenever he wanted, Rumble was sure that being grown up was better than being a kid.

                    Plus… it meant hanging out with other ponies that were grown up. Ponies like Flitter and Cloudchaser.

                    Rumble’s classmates always told him he was funny. He wondered what it would be like to tell a joke and have Cloudchaser’s slender foreleg rest on the back of his neck.

                    The two pegasi, being good friends of Thunderlane’s, were always the first choice to babysit when Rumble’s older brother was out at night. Rumble caught himself feeling ill at the thought of the word ‘babysit’. So juvenile. He wasn’t a baby – he was a kid, and that only through constraints of necessary biology. But that was how Flitter and Cloudchaser treated him: like a baby. They tried to play stupid games with him and feed him kid food like peanut butter and hay sandwiches, and they always made him go to bed before his brother came home.

                    Of course Rumble played along, most of the time. He could still get the pair to laugh with his antics, and while he might not get rewarded with a literal pat on the back, he felt warm inside when he managed to elicit a laugh. He also felt a strange tingling he couldn’t quite describe, that seemed to plague him every time his pegasus neighbours were around.

                    “I’m tired of this!” he shouted to no one in particular.

                    The empty house paid him no attention.

                    Snorting again in frustration, Rumble turned his head towards the clock hanging in the living-room. A quarter past four, which meant his brother would be in for dinner soon, most likely.

                    Rumble parted the curtains and peeked outside. His brother and babysitting pair were still standing in each others’ company, laughing and ignoring the throngs of ponies moving past them on the way to somewhere more important.

                    Maybe he had time before dinner after all.

                    The dense foliage of the Everfree was the least inviting site imaginable. Even before setting hoof inside, Rumble could feel the eyes of a million unspeakable creatures leering at him from the darkness. He knew that plenty of ponies from town had made their way into the Everfree at one point or another, and most of them had returned unscathed.

                    It was the ‘most’ that worried him though.

                    Rumble swallowed loudly and took one step forward, his hoof landing loudly on the dirt covered broken-looking path. A nearby tree-branched jostled in accompaniment to his movement, and Rumble almost jumped, catching himself just in time.

I’m not ready to be older if I freak out at some stupid tree.

                    For its part, the tree waved lazily in the remnants of the breeze swaying throughout most of Ponyville.

                    Rumble swallowed again, lowered his head, and began his walk.

                    The knock on the door startled Zecora almost enough to make her drop the beaker she was holding. She fumbled with it for a minute, locking her teeth tightly onto the edge of the container precariously, and breathed a sigh of relief when the vial of liquid remained in place. After a moment to collect herself, she set the beaker down on a nearby countertop.

                    Company wasn’t something she was used to. The occasional visit from Twilight was enough of a regular occurrence that she had taken to marking it in her mental calendar – but unsolicited visitors were so rare as to be almost completely nonexistent. In fact, the only other time she could remember was the day she’d gotten involved with a yellow pony bearing a bright red bow whose sister and friends showed up shortly thereafter…

                    Zecora braced herself for the worst and opened the door.

                    A pair of bright violet eyes and an eager grey face stared up at her from in front of the door.

                    “Um,” they said.

                    Zecora considered her greeting carefully.

                    “Hello, my unexpected guest. What concern of yours might I address?”

It’d do for now.

                    “Um,” said the pair of eyes again, or rather the accompanying mouth attached to the grey body holding them aloft.

                    Zecora smirked and leaned forward slightly to peer down at the colt standing nervously on her front step.

                    “Is there a reason for your visit today, or have you simply lost your way?”

                    “I, uh…” Rumble had built up the words in his head, but somehow forgot them instantly upon knocking. The fact that he had made his trudge through the forest in one piece was enough to make him feel perpetually disarmed – and to be honest, he hadn’t expected the rhyming. It was just a tad disconcerting.

                    But, he had come here for a reason, and he wasn’t about to miss an important opportunity due to nervousness.

                    “…is, uh… is it true you do magic? Like… potions and spells and stuff?”

                    Zecora smirked, though inwardly she was a bit taken aback that a small colt had wandered through the Everfree by himself to ask her such a question. No doubt her reputation in Ponyville was steeped in rumours of witchcraft and voodoo magic.

                    Not that the rumours were untrue necessarily… but she certainly didn’t encourage them.

                    “Before I answer might I ask in return, what about my magic you came to learn?”

                    Zecora slid sideways against her doorframe, catching Rumble’s gaze half-way through leering into her shack and exploring Zecora’s residence entirely with his eyes. Rumble jolted at the sudden movement, and then blushed.

                    “I was… I was wondering, just, if you did magic stuff, is all.”

                    Zecora waited patiently for the rest of the explanation.

                    After several seconds of silence, Rumble shifted his eyes from side to side and kicked a hoof at the ground nervously.

                    “I mean… I wanted to know, ‘cause, I, uh… I had a magic, uh, thing, I was wondering about.”

                    “The chance of explanation remains bleak, unless you tell me the type of magic you seek.”

                    Rumble swallowed loudly. He reminded himself why he had made the trek through the forest in the first place. He thought about glaring out his window, Flitter and Cloudchaser draped over his brother and giggling uncontrollably.

                    “I wanna be big!”

                    Zecora raised an eyebrow.

                    “I mean… I wanna be older. A grown-up. I’m tired of being a kid.”

                    Zecora couldn’t hold back her grin.

                    Rumble managed to match her smile, hoping any kind of positive reaction might lead to what he had stumbled through the forest for.

                    “Growing older is quite the request. What about youth do you so detest?”

                    “I just hate it!” Rumble surprised himself with the force of his response, but the emotion was caught in his mind now, and he saw no reason to restrain his explanation if Zecora was asking for it. “Being a kid is miserable. Grown-ups treat me like a moron, I can’t do anything exciting, everyone else my age is immature and stupid, and I don’t think it’s fair I should have to wait for so many years to have other ponies treat me like I matter.”

                    Zecora nodded knowingly, surprising Rumble with her consideration.

                    “A fair complaint to have indeed. And so, what is it you feel you need?”

                    “I want to be older! Or bigger! Or, just… not a kid anymore.”

                    Zecora stepped away from the side of her doorframe and backed inside her rustic shack. She held her tongue, simply beckoning inside with one hoof.

                    Rumble couldn’t believe his eyes. He considered pinching himself to check for potential hallucinations, but reconsidered with the understanding that even if he was hallucinating, that he’d be doing himself no favours by coming to. He almost jumped inside the hut, giving a tiny flap of his wings as his hooves touched the woven mat flooring.

                    The interior of Zecora’s house was everything he’d expected – tribal paintings and masks were hung on the walls, and the countertops were littered (in a tidy fashion, however) with vials and strange clay containers, racks of bottles and wooden holding devices for bowls and other utensils. And in the center of the room, a giant cauldron; just like he’d imagined.

                    “Before I help with your youthful depression,” began Zecora, drawing Rumble out of his revelry and snapping his attention away from a bubbling container of something inches from his face on a nearby countertop, “I need the answer to a simple question.”

                    Rumble nodded absentmindedly, staring at Zecora with an almost deity-like reverence.

                    “I can indeed give you a potion to change your morphology… but if I do, will you use it responsibly?”

                    Rumble’s head bobbed up and down too fast to monitor. His eyes became a blur as he nodded repeatedly.

                    “Oh, yes yes yes, I promise. I know I’m already ready to be a grown-up – if you help me I’ll be the perfect adult, I’ll be responsible and respectful and not miss being a kid for a second.”

                    Well, he certainly had his proposal prepared.

                    Zecora leaned her head toward the counter and grabbed one of the many vials at place in her wooden shelving unit. She popped the top off with her teeth and emptied half the contents into a nearby bowl with a cavernous rim. It was too tall for Rumble to see inside, so he contented himself with peering up from below.

                    Zecora replaced the vial and select several more, pouring careful amounts of each into the bowl. After the second or third addition the mixture began to froth audibly, and Rumble could smell a pungent aroma creeping out from the confines of the mixing container. He kept his eyes glued to Zecora, watching her mill about for more ingredients and utensils. He was sweating from nervousness – and for some reason, when Zecora bent over to reach into her cupboards, he felt a familiar tinge, the same one he felt when Flitter and Cloudchaser were around.

                    After more ingredients than Rumble could count, Zecora grabbed a nearby wooden ladle and stirred the mixture vigorously for a moment. Rumble gasped as he saw her face glow with a green aura, emanating brightly enough from the bowl that even he could see it from his vantage point near the floor. Zecora hummed something to herself as she set the ladle down. Rumble followed her movement with his eyes as she grabbed a nearby empty flask and, with deft usage of her mouth, poured the mixture inside. It was bright, green, and bubbling.

                    Rumble caught himself already holding out his hooves as Zecora lowered the vial into them. His eyes beamed so wide and bright they looked like they might burst.

                    “I will impart to you a tale from my homeland, a country marred with jungle and sand.” Zecora closed her eyes as she spoke, and opened them to Rumble holding the flask in his hooves and staring at it eagerly. She cleared her throat, and the pegasus colt blinked for a moment before jerking his head up, staring up to show he was paying attention. Sure that he was listening, Zecora continued.

                    “Things are not there as in Ponyville – there is no burden of age to fulfill, before one can be judged and live their life. From youth there is every chance for boon and strife.”

                    Rumble nodded along, following every word but showing a lack of understanding with the blankness on his face. All he could think about was the potion in his hooves, and how this could finally mean no more being treated like a kid…

                    “The solution I have given will give you what you ask, a dose of adulthood contained in a flask. But consider carefully what growing up means, and what you might lose in your youth and your teens.”

                    Several seconds of silence passed as Rumble tried desperately to digest what Zecora was trying to tell him. After what felt like an eternity, the zebra waved her hoof towards the door, and Rumble’s eyes lit up excitedly again.

                    “Thank you, thank you, thank you so much! I promise I’ll be careful, thank you thank you thank you!”

                    Rumble couldn’t help but slam the door in his enthusiasm. The leaves of the Everfree kicked up with the speed of his gallop back to town.

                    From behind her door, Zecora’s smirk was so wide it threatened to take her head off.

                    She remembered the feeling of wish her youth away. Sometimes, a taste of adulthood was enough to present some much needed perspective.

                    In the back of her head, Zecora wished she had given him just a taste before letting her go. The way the colt’s eyes had hung on her backside when she bent over reminded her she had been without some proper ‘company’ for a good while.

                    Well… given Rumble’s behaviour, she could consider that outcome when he came back for a refill.

                    "Wow."

                    Rumble held the glowing green flask between his hooves. He peered through the glass in an attempt to discern the behaviour of the repugnant looking liquid inside – it burbled and swished back at him, acting as though it might try to escape at any moment.

                    It didn't look as though it would be particularly tasty.

                    Thunderlane hadn't even batted an eye when Rumble snuck in well after dinner was over - whether he guessed the young colt to be out playing with his friends (which he had spurned in interest of further his maturity), or whether he simply didn't care, Rumble couldn't be sure. His brother had been playing video games in the living room when Rumble had crept back from his excursion into the forest, and had only managed a half-attention 'hey' as Rumble headed up to his room. He'd barely even needed to conceal the vial as he went up the stairs.

                    The solution looked grim. Even though Rumble had every trust in Zecora to concoct something that wouldn't send him into the throes of a terrible mutation, the ingredients she'd thrown into her pot hadn't looked even remotely familiar; besides which, for some reason Rumble had felt himself having trouble focusing on anything other than Zecora as she moved about her shack. He’d ended up staring at her backside most of the time… and that fuzzy feeling had come along too.

                    Zecora’s hips were wider and rounder than most ponies, he decided. They had just gotten in the way, that’s all.

                    In any case, he still had the final plunge to make. Going to Zecora’s through the Everfree by himself was one thing, but forcing himself to swallow the bizarre concoction he’d received was another entirely.

                    But… it was supposed to change things.

                    Was he just a kid trying to avoid swallowing his medicine?

                    Rumble pulled the stopper off the glowing flask. The smell of hit him like a ton of bricks, somewhere between a spice cart at the market and a grimy puddle filled with Celestia knows what. He gagged, but only kept his head turned away for a second.

                    He swore he saw the mixture burbled.

Time to grow up, he thought.

                    With a toss of his head, Rumble drew the beaker to his lips and drank.

                    Two seconds.

                    “Blehh!”

                    Rumble yanked the flask away from his mouth and spat. He’d managed to swallow most of his mouthful, but a few green drops flew across the room.

                    The taste was indescribable. Rumble wondered if Zecora had slipped a dead rat into the mixture.

                    He’d only manage to take half a swig – there was still almost all of the concoction waiting for him.

I can’t do this…

                    Rumble held the drink between his hooves, staring at it forlornly like a colt at the window of a chocolate shop.

                    Maybe he really didn’t deserve to grow up. He couldn’t even stomach this terrible tasting medicine, the final step between where he was and what he really wanted.

                    Out of the corner of his ear, Rumble thought he heard something other than the noise of his throat trying desperately to force out the remainder of the drink that had gotten through.

                    A giggle coming up the stairs.

                    Rumble carefully set the beaker down on the carpet and walked to the door. He peeked outside as though someone might be watching him before walking down the hallway to the stairs. The giggling was louder, interspersed with conversation he couldn’t quite make out.

                    Just past the bottom of the stairs, he could see his brother sitting with the pegasus twins, Flitter and Cloudchaser draping themselves over the couch and laughing.

                    The door had barely creaked shut before Rumble took up the drink again.

I’m going to grow up even if it kills me.

Home Sick

                    “Hey lil’ buddy, wake up. It's almost half past ten."

                    Thunderlane knocked before opening the door. He surveyed his brother’s bedroom as he stepped past a pile of schoolbooks – for someone so young, Rumble’s room was kept relatively need, save for the odd stack of comic books that seemed to escape from the closet of their own accord.

                    The lump in the middle of the bed covered by blankets must have been Rumble, but he hadn’t moved when Thunderlane called. Come to think of it, he’d missed dinner. Maybe he was just a bit under the weather?

                    “You okay bro? The day’s gonna be gone if you don’t get up soon, and I’m guessing you wanna have breakfast.”

                    Thunderlane nudged the mass under the blankets with a hoof, poking it in the side several times.

                    “Uhhhh…”

                    Rumble’s face as he rolled out from under the pillow he was using as a shield almost made Thunderlane recoil in shock.

                    “Holy cow! Are you feeling alright dude? You look awful!”

                    “Bluhh…” Rumble couldn’t manage a proper response. True to his brother’s not-so-tactful observation, he did give the impression of a pony who’d been run over by a tractor. His hair was disheveled, his eyes were bloodshot and bleary, and his wings were crumpled and haphazard with feathers sticking out in every direction.

                    “You don’t look like you’re gonna make it up any time soon. Are you sick? Does your stomach hurt or anything?”

                    “No…” Rumble groaned, fighting the urge to wrap himself in bedding again. “Just not feeling good…”

                    “I can see that,” Thunderlane said. He prodded experimentally at one of Rumble’s protruding wings, earning an exhausted sounding groan. “Maybe it’s best if you stay in bed today, champ.”

                    “Gnuhh…”

                    “I’ll take that as a ‘yes’. Look, I have to get to work, but I'll get Flitter and Cloudchaser to come check up on you in a bit, okay? If you need anything before then, just stick your head out the window and yell."

                    Rumble didn't even manage a grin at his brother's awful suggestion. He dragged the blanket back up over his head and groaned with a low voice into the fabric.

                    "Yeesh. I'll stay home if you need me, dude. I don't want you expiring while I'm at work."

                    "'s fine... not that sick."

                    "You could have fooled me."

                    Thunderlane lingered with his eyes on Rumble's pile of tangled blankets as he parted the bedroom door.

                    "You sure? Last chance."

                    "Mnuh."

                    "Alright. Remember to drink lots of fluids... Or, I guess if you're smart, you could wait for Flitter and Cloudchaser to come by and they'll help you with that."

                    Rumble shifted properly for the first time since his brother's intrusion, but still only responded in a series of mumbles.

                    Content with Rumble's health for the time being, Thunderlane made his way out of the bedroom, rustling his wings as he readied himself for the flight to work. He'd have to stop and see the twins on the way there - but, that was far from something to be upset about.

                    In his bed, Rumble felt like a larva in a cocoon of sweaty garbage bags. He'd tossed and turned all night, throwing his pillows in every direction and struggling to shake the feeling like he was melting. Every time he'd closed his eyes, bizarre visions had surrounded him: flowers and herbs and dancing, all of it led by a sight in the horizon that had revealed itself as what turned out to be Zecora's backside. And several times an hour Rumble had jolted out of his half-sleep with a gasp, finding himself twisted in his bed sheets and with the strongest fuzzy feeling between his legs he'd yet experienced.

                    Now that it was morning the visions were gone, but Rumble had traded the sensation of sinister looming fauna and oddly tantalizing posteriors for a mouth laced with sandpaper and a headache rivalling an earthquake. On top of the more tangible discomfort, there was an extra feeling coursing through Rumble's body that he couldn't quite place – the feeling that somehow, part of him was trying to jump out of his own skin. His body itched from the inside, and it left him with a constant feeling of unease; it was only through exhaustion from too much turning and thrashing that he managed to keep still.

                    With the carapace of damp blankets wrapped around his head, Rumble coaxed himself back to sleep with less difficulty than he'd expected, falling again into a chasm of dancing vines and a tingling in what felt like an ethereal limb provoked by the curves of black on white at the periphery of his vision.

                    "Gah!"

                    Rumble gasped and snapped upright. The tangle of blankets wrapped over his limbs came with him, hanging from his shoulders like a shroud of hot, dead butterfly wings.

                    Momentary panic onset in the few seconds just after waking up. Rumble jerked his head back and forth in an attempt to ascertain where he was, and what had changed to reconcile the dream he'd been having a moment ago.

                    He was at home, in his bedroom.

                    Rumble sighed.

                    On the bright side, aside from the feeling that he'd just gone for a swim in a pool of sweat, Rumble felt a bit better. The internal ache like cockroaches under his skin had mellowed – though, it felt like it might just be a momentary abatement, like the return of cohesion as an urge to vomit disappeared before your stomach abruptly told you it was time to be emptied.

                    Rumble steadied himself half-upright and tried to shake the cobwebs out of his head.

                    His blankets were a mess, poking up in parts and forming a misshapen set of mountains over his body, spiking up and falling into valleys haphazardly. Rumble grabbed a clump and threw them sideways off the bed. The mass of the fallen blob dragged the rest of the blankets with it, sliding over Rumble's body and landing on the floor. The way the material grazed against his skin made Rumble shiver - and as the last tail of the blankets descended, skirting between his legs, Rumble gasped as his body jumped.

                    Was that...?

                    He'd never seen it like that before.

                    Was that part of how sick he was feeling?

                    With little regard for what might potentially be an illness-inflamed appendage, Rumble prodded at the thing between his legs with his right hoof.

                    "Ah!"

                    The shout bounced off the bedroom walls. Luckily, there was nopony else to hear it.

Wow. That felt good.

                    It was a strange sort of good; like someone was tickling him in a way that took all the agonizing discomfort of uncontrollable laughter and condensed into a warm, happy, sort of desperate feeling. It felt almost a little too good; a sort of burning, worrying good.

                    Of course, Rumble prodded again with a little less caution this time.

                    The moment his hoof touched the spotted skin standing up between his hind legs, the engorged length of flesh twitched. Involuntarily, Rumble's eyes closed, and he let out a soft groan.

                    Woah.

                    Well, this was a growth of some kind... he wondered if Zecora had misinterpreted exactly what he'd meant.

                    The feeling of tingling along his skin was worrying. As much as the waggling length bobbing at the end of his body seemed inviting, Rumble felt a subconscious suggestion in the back of his head keeping him from continued poking.

                    What time was it?

                    The clock at his bedside table clicked in answer. It took longer than normal to hold the hands still in his mind to read the time.

                    Almost two thirty.

                    Rumble suddenly felt very thirsty. He managed to pull himself up and out of bed with the thing between his legs bobbing perilously along the way. It hung down like an arm reaching toward the ground, and when it grazed his leg, Rumble felt his spine twitch.

                    He wasn't stupid. The mechanics of sexual biology were something that was at least covered in brief in school, even if it had just been a very short, awkward seminar by Cheerilee, blushing the whole time as she explained the differences between colts and fillies. Rumble had felt annoyed at the gaggles of giggling foals around him as the picture examples were presented – he didn't find any of it funny: just boring.

                    This was certainly far from boring.

                    Rumble turned on the sink with his teeth and held his face under the cold water, collecting a decent set of condensation before pulling his head out of the miniature waterfall. The cold water made his skin feel less hot, but the warmth emanating from lower down persisted.

                    A colt's... penis... Rumble forced himself to think the word, finding it a mixture between crass and titillating – it wasn't supposed to become... big... unless.... well, ever at his age. Cheerilee had said that when the class was older, they might start to experience feelings and sensations throughout their bodies that they wouldn't understand, and those meant they were growing up. And there were signs for both sexes that seemed to carry a regard of societal restraint. Male's became... engorged... when they were excited by a female, and females... something about a gesture? Tails, or... their eyes... winking? Rumble was fuzzy on the details.

                    Either way, there were no girls around. Except–

                    The memory of Zecora in Rumble's head was much more focused in his head than it had seemed at the time. He'd caught glimpses of everything around the tribal kitchen, ingredients and procedures – but now, he could only think about the one aspect that had followed home and into his dreams.

                    Zecora's... behind. It was almost hypnotizing. Round, curvy – it looked soft even from a distance. And when Rumble thought about how he had stood behind the zebra watching her bob and shake her rear only inches from his face…

                    Rumble gave a short gasp as he realized his unexplained erection had grown even harder as he fantasized. The disconcertingly lengthy organ he still didn't feel belonged to him had straightened out completely and was now pressing against his stomach.

                    And his stomach... it felt tight. Like he had eaten too much and was ready to burst.

                    There was that feeling again. Of his skin crawling over his own bones, aching to escape and fall away.

                    Despite the rigid member underneath him, Rumble's legs gave way in the height of his discomfort, and he fell to the bathroom floor, the cool tile chilling against the increasing heat of his own body temperature.

                    Had there been something wrong with that potion?

                    The sound of a door slamming jolted Rumble out of his painful self-occupation. It was only mid-afternoon, last time he checked. Thunderlane shouldn't be getting home until–

                    "Rumble? Are you here?"

                    The voice that carried up the stairs was shriller than it had any right to be, but it was still gentle and feminine enough for Rumble to place in an instant.

                    "He's probably still sleeping upstairs, silly," the first voice’s counter answered. The two voices were very similar, with only a minor distinction in intonation setting them apart. The shouted question felt spikier, and more insistent and tomboyish, where the response felt just a tiny bit softer, fluffier, and more gentle.

                    "Well, we should probably go up and see how he's doing then," Cloudchaser said.

                    Rumble could hear the pair's hoof steps on the stairs.

                    He considered panicking aloud, but decided his attention was likely better directed elsewhere.

                    If he crawled into bed they might not see it. Even if they did see it, did he owe them an explanation? They might just be curious why a colt was sporting such a big...

                    Rumble considered the shower. The steps up the stairs were moving slowly.

                    With a yank on the wall-dial, a freezing cold spray of water began to cascade down from the shower head. Moving too fast to give himself time to think, Rumble flapped his wings and jumped into the shower, clenching his teeth in shock as the icy liquid coated his skin.

                    When it hit his erection, Rumble wished he could bite through his own tongue.

                    The spotted length, for its part, bobbed irreverently in the stream. It gave no sign of going down.

                    Rumble could hear the flattening of the hoof steps as they reached the upstairs hallway.

                    No more time.

                    Rumble shoved the dial into the wall and ceased the flow of water. He allowed himself a single shake to dry off, grimacing as his penis slapped absurdly against the side of his leg. He flapped his wings and flew from the shower without stopping, throwing his bathroom door closed behind him and landing in the bed with a creak of his bedsprings. Unconcerned with untangling the bed sheets, Rumble grabbed the nearest clump of blankets and threw them over himself, turned onto his side, and closed his eyes.

                    His bedroom door parted seconds later.

                    "Hey Rumble, are you in here?"

                    "It's his bedroom, where else would he be?"

                    "Quiet, he might still be sleeping!"

                    Even with his eyes closed, Rumble could separate the voices. Flitter. Cloudchaser. He could picture them in his mind's eye, swishy silver hair and delicate pink bow making their way into his bedroom.

                    He held back a groan as he felt himself twitch against the blanket.

                    "Rumble? Are you awake?"

                    Flitter had mistaken his groan for one of ill discomfort. To be fair, Rumble certainly felt uncomfortable. Even with the nagging insistence of his brand-new adolescent growth-spurt, Rumble still felt like his entire body had been wrung through a furnace or washing board. Maybe both. And his bones ached too, like he'd been in an accident in his sleep. The dreams were vivid, but not that vivid, and he couldn't remember doing anything other than staring at Zecora's ass anyway.

                    Twitch.

                    "Come on big guy, rise and shine. Your brother asked to come by and see how you're doing."

                    "Mnuh..."

                    Rumble didn't have to feign the lack of words – even if he was able to assemble some sort of coherence, the combination of precipitous sexual tension coursing through his body for the first time, alongside the aching cross between what felt like illness and body-dysphoria was enough to rob him of any words that sprung immediately to mind.

                    "Aw, Rumble, are you okay?"

                    There was a definite difference between the two pegasi. They blended together in a crowd, certainly, but given the situation their personalities were staunchly unique. Flitter, for example, was the one to let her voice dip in sympathy of an injured colt – Cloudchaser was probably groaning in her own head about how she'd been roped into checking up on a sick baby for a friend.

                    Rumble opened his eyes. Flitter smiled at him from only several inches away.

                    Twitch.

                    Rumble groaned and hunched himself together. The feeling of the blanket against the head of his engorged member felt far more sensuous than it had any right to, and the curl was the only way Rumble had been able to keep himself quiet.

                    Flitter's eyes widened at what appeared to be a display of all-consuming illness.

                    "Ohmigosh! Hun, do you need me to take you to the hospital?"

                    Her hoof. Her hoof on his back. It was so gentle and soft. It seemed to ease away the tension underneath his skin.

                    Rumble collected himself as he kept crouched, trying desperately to hide the organ so eager to tent itself under a likely patch of blankets.

                    "No... no, I'm fine. Stomach just hurts a little."

                    Rumble managed a half-heart smile which Flitter met with more concern.

                    Her eyes were so big and pretty... and her hair was soft, and slender, just like the rest of her body.

                    Please no twitching...

                    "Rumble's tough, he doesn't need to rush off to see the nurse over a stomach flu. Do you, guy?" Cloudchaser asked.

                    Flitter glared at her sister for making light of the situation, but Rumble was fairly confident it was his best out. At least maybe he could get the pair out of the house so he could calm down and sleep off the rest of whatever feeling was coursing through his body.

                    "No... like I said, I'm fine. Just probably need more rest."

                    "Do you want us to leave and let you get back to sleep?" Flitter asked, rubbing her hoof up and down Rumble's back.

                    Yes, said Rumble in his head. Please leave so I can get rid of this thing between my legs and go back to sleep. And when I wake up tomorrow, all of this will have been an awful dream.

                    Dream...

                    Curves. Bouncing.

'I want to grow up.'

                    He'd grown up in one regard.

                    "No," Rumble blurted, turning his head to face the twins.

                    Flitter met him with a smile. As much as her sister might be annoyed at the obligation, Flitter relished the opportunity to take care of such a cute little colt. Besides which, Cloudchaser might grumble, but both pegasi liked Rumble. They spent enough time around his brother to know he was going to grow up into a handsome lady killing stallion, which meant they should take advantage of his innocence and cuteness while it was still around.

                    "I mean... I'm feeling a bit better, but just lying in bed all day is really crummy. Could you guys maybe just stay for a bit and keep me company?"

                    Against the cynical budding adult-hood in his own conscience, Rumble allowed himself a perfect set of puppy-dog eyes.

                    Flitter melted, and even Cloudchaser couldn't hold back a visual 'aw' with an earnest grin.

                    "Of course! Did you want us to get you anything? Water, or soup maybe?"

                    Rumble's head was spinning. Despite everything since awaking – all the sensations that had left him feeling like his head was working separately from his body – Rumble felt oddly calm all of a sudden. The quelling electricity underneath his skin that had brought the real drop to the pit of his stomach had vanished, eased away by the presence of the two delicate winged beauties currently standing in his bedroom.

                    He wanted them to stay. And for once, for reasons he couldn't describe, he felt more capable of convincing them of his worth than ever.

                   "I'd really like some water... but I think I can manage to get up for it myself. I really just need to get out of this bed... it feels really gross after lying in it all day."

                    "Are you sure? We'd be happy to fetch you something to drink, or get you some new blankets," Flitter offered.

                    Cloudchaser shot her a sideways glare, as if to say 'speak for yourself' – but Flitter remained unflinchingly doting on the 'sick' colt in front of her.

                    "Well, can you maybe go downstairs and get me a glass, and I can come down and sit on the couch for a while?"

                    "Sure!"

                    Flitter grabbed her sister by the foreleg and pulled her towards the door, a gesture that earned an eye-roll and sigh from Cloudchaser. She shot a quick grin to Rumble as if there was some joke that only the two of them were aware of, before being dragged downstairs.

                    With the girls gone, Rumble tried desperately to will himself into a somewhat normal state.

                    His skin still felt like eraser outsides stretched over a swarm of insects... but there were girls waiting for him downstairs.

                    Eventually, Rumble's excitement subsided. His steps felt electric against the carpet as he shakily made his way across the bedroom and out into the hall. His skin was still damp from a combination of water and sweat, and every other second his stomach threatened to escape from his mouth through his esophagus... but he wanted to go downstairs. He wanted to have water with Flitter and Cloudchaser, just like his brother did.

                    The guard-rail on the stairs proved an essential companion on the way down. Rumble's legs seemed to be changing length as he used them, missing easy steps and reach too far down on others.

                    As Rumble reached the bottom of the stairs leading to the kitchen, Flitter ran to him immediately, her eyes overbearing with sympathy. She reached out a hoof to help him forward and succeeded in guiding him inside the kitchen proper before Rumble waved her off.

                    The inside of Rumble's house had always outshone the outside veneer. His brother spared no expense when it came to extravagant interior decorating, and so the kitchen was replete with a set of marble countertops and the latest and greatest in food-cooling technology. The room as a whole was far bigger than it needed to be – but for once, Rumble didn't feel quite so dwarfed next to the giant counter island he was standing next to. Once he was sure he had his footing on the slippery surface underneath, he took the time to reassure the pegasus at his side.

                    "I'm okay, just a little woozy. Would you be able to get me a drink?"

                    "Sure! Do you want water, or apple-juice?" Flitter asked cheerfully.

Apple juice?

                    "I'm not a kid y'know."

                    Flitter giggled, extended a hoof and rubbed Rumble on top of his head.

                    "Of course you're not... I can see how much you're growing,” she went on with an edge of potential sarcasm. As she spoke, Flitter ran her hoof down Rumble's mane, well-styled and slick on any other day but haphazard at the moment. Her touch lingered on the back of Rumble's neck for a moment before it reached his wings, and Flitter ran her caress over the feathers like she was petting a cat.

                    "Hmmm... actually, your wings are looking pretty... well-developed. Have you been doing exercises?"

                    Words spun in Rumble's head as he felt what had started out as a condescending head-rub turn into a sort of impromptu massage on his back. He considered his response. But the way Flitter had spoken... had he been growing? He'd just felt like he was going to throw up all morning, and hadn't even bothered to check to see if the potion had worked at all.

                    "Um... kinda."

                    Rumble noticed; Flitter was blushing just a bit on the sides of her cheeks, and her wings were flared out ever so slight. Her rubbing had become a little firmer, languishing over each individual feather on Rumble's back. she was right, his wings did feel bigger. Like they were too big for his normal frame: but right now, they fit.

                    "They're really nice and strong..." Flitter murmured, staring at nothing in particular as she stroked. Rumble felt a tingle go through his body, and a stirring between his legs that reminded him of the way he'd felt upstairs a few moments ago–

                    "Hey, Rumble! Are you feeling any better?" Cloudchaser shouted from the nearby doorway as though she hadn't seen Rumble just a few minutes ago.

                    Rumble turned his head simply, but he felt Flitter jump a bit at her sister's voice and withdraw her hoof faster than seemed necessary.

                    "He looks like he's doing okay. I was just, uh, feeling his temperature. It seems alright." The remnants of red on Flitter's cheeks took their time in clearing away, but if Cloudchaser noticed, she didn't draw attention. Instead, she turned her head to Rumble, waiting for his summary.

                    "Uh... yeah, actually. Moving around instead of lying in bed has already got me feeling less like a zombie."

                    Was his voice different? It felt... off. Deeper, maybe.

                    "Well, that's good news. Did you want us to hang around for a bit and keep an eye on you? Your brother knows we don't have a problem babysitting."

That word…

                    "No 'babysitting' please, but if you guys could keep me company and make sure I don't... y'know, ralph everywhere, that'd be cool."

                    Flitter cringed at the use of the word 'ralph', but Cloudchaser beamed widely at the delightful onomatopoeia.

                    "Alright, we'll help you out if you pull a technicolor yawn. Won't we Flitter?"

                    Flitter was blushing for completely unrelated reasons at this point.

                    "Please... could you not use those words?"

                    "Right, sorry. If Rumble eats lunch in reverse, we'll do clean up, right?"

                    "Cloudchaser!"

                    Cloudchaser's silver mane shone as she roared her head back and laughed.

                    "Alright, that's enough. What would you like to do while you're up, Rumble? Do you want to play a board game?"

                    It might have been the use of the phrase 'technicolor yawn' (as amusing as he'd found it), but Rumble was feeling a rumbling in his stomach again. Against his body's biological urges, however, he found a stronger one in the back of his head to avoid embarrassing himself in front of the twins.

                    "Let's, uh... can we watch a movie? There's a bunch in the living room, if you guys want to go pick one out."

                    "Okay. Are you alright to get into the other room by yourself?" Flitter asked, flapping her wings and lifting off the ground in her sister's direction.

                    "Yeah, I just need a minute. I'll be there in a bit."

                    The twins cleared the doorway and left in search of a palatable title – Thunderlane was known for his movie collection, meaning the only difficulty would be the debate between Flitter's choice in romantic comedies versus Cloudchaser's love of explosions.

                    The moment he had the room to himself Rumble leaned toward the nearby counter and braced himself with his foreleg. The leaned over posture was fully conducive to a potential upchuck – but as much as his stomach threatened, Rumble couldn't feel the delivery.

                    Instead, he felt... strange.

                    Just strange. It was a sensation without proper appropriation. His wings... 'hurt' wasn't the right word. They felt stretched. His feathers were ruffling into themselves, and then correcting as soon as they had changed. And the rest of his body... his legs felt strange too. Like they were pushing the ground further away.

                    Rumble's stomach gurgled as he closed his eyes and leaned his forehead onto his leg. The cold sweat on his brow yielded a strange sensation against his burning hot skin.

                    Obviously, his health was a matter for immediate concern, but his brain was reminding him constantly that there were two cute pegasi waiting for him in the other room.

                    Rumble lifted his head and opened his eyes. The counter-top seemed further away.

                    "Are you doing okay in there champ?" Cloudchaser's voice carried out of the living room, sounding more concerned than impatient.

                    "Yeah, I'll–"

                    Rumble cut himself off mid-sentence. Did he have a frog in his throat? His voice sounded weird.

                    "–I'll be there in a minute," he continued, rubbing a hoof across his forehead. The sweat had at least subsided a bit.

                    Rumble grabbed the glass of water resting on the counter and downed it in one gulp. The cool liquid seemed to quell his stomach's grumbling for a minute.

                    He needed to keep it together now, for movie time.

                    "We're watching 'Wind Beneath Her Wings'," said Flitter by way of a greeting, holding the movie-case aloft triumphantly. Behind her back, Cloudchaser made a gagging face with her tongue extended.

                    "Uh... okay? Is that a good one?"

                    "It is! It's the story of a pegasus and a unicorn who fall in love, and how their relationship blossoms through their differences and hardships–"

                    "In other words, barf," Cloudchaser interjected.

                    "No barf!”

                    "Right, sorry." Cloudchaser's expression said otherwise, but it was enough to calm the start of another sisterly debate.

                    Rumble sidled over to the living room couch with some trepidation – the ground underneath his hooves felt a bit unstable, like it was lurching out from underneath his center of gravity every other second. The living room was just as big as the kitchen adjacent, if not bigger: red carpeting and shelves lined with games and movies were the furnishings instead of a gargantuan refrigerator.

                    Both pegasus twins stared at him as he made his way across the room, and he found himself sweating with the worry that his body was threatening to topple his chances at an afternoon of movie viewing with the pair.

                    "Woah, Rumble, have you been working out little buddy? You look totally ripped!" Cloudchaser asked, leaning over the arm of the couch as Rumble approached. Rumble took pause at the praise, and gave the front of his body that he could see a quick once over.

                    "I do?"

                    "Yeah, man! You look like you could bench press Flitter if you wanted to!" Cloudchaser giggled and avoided a swipe of admonishment from her sister. When her dodge finished, she locked her eyes on Rumble again – and, though she might not have noticed it herself, Rumble caught the subtlest lip bite as the stare went on.

                    "Well... I mean, I have been getting a bit more exercise, and stuff," Rumble lied. He didn't feel any 'buffer', but he did feel different. All of a sudden, different. The itch under his skin had subsided a bit, and it was still there in the background, but now it was superseded by the sensation that every part of him was just a little bit extra. Longer, bigger? Just, more. And still shifting in a way he couldn't quite pin down.

                    Cloudchaser's stare felt nice.

                    "Can I start the movie?" Flitter asked, poising herself at the entertainment unit. Thunderlane had spared no expense in exorbitant extravagances for the purpose of movie viewing, so the giant television that held the center of the room was big enough to dwarf any of the room’s three occupants.

                    Rumble nodded, and Flitter slid the disc into the tray where it settled with a click.

                    "Come sit down, man. You should get off your hooves if you're still feeling sick."

'Man'. That from 'little buddy'. Rumble hid a smile and made his way over to the couch. There was room on Flitter's side–

                    "Hey, make room for Rumble, sis! He's sick, he shouldn't have to walk around any more than necessary," Cloudchaser admonished, and shoved her sister down to the other end of the couch, making a perfect Rumble sized spot right in the middle of the couch.

                    It wasn't like Cloudchaser to be so nurturing – as a result of the unprecedented concern Flitter only huffed in a mildly irritated fashion when she was shoved to the far end of the sofa. She sloughed off the minor offense almost instantly, and patted the space next to her with her hoof.

                    "I'm sorry, Rumble. Please, come get comfortable."

                    Flitter's cheeks were still a bit red, for some reason.

                    As Rumble made his way to the middle of the couch, he felt something brush up against his side. He turned his head to find Cloudchaser's forelegs on one of his wings – it did look a bit bigger, now that he took the time to notice it.

                    "Uh, sorry big guy. Your wings are just, uh, kinda buffed out... I thought I was out of the way, but I guess not."

                    Rumble nodded and took his spot between the two sisters. As the last of his feathers brushed across Cloudchaser's outstretched leg, he swore he felt her move along with him for a moment, prolonging the touch for a few seconds.

                    The leather of the couch squeaked as Rumble took his seat. Almost a whole couch cushion – more than he could ever remember taking up before. His body sunk nicely into the well-constructed upholstery.

                    Despite the sizeable real-estate on either end of the couch, Rumble felt bodies press against both sides of him.

                    "Sorry, Rumble, is it too crowded for you?" Flitter asked. Her eyelashes fluttered as she spoke, and the scent of her hair-conditioner wafted under Rumble's nose with a poke from her pink bow.

                    "No, it's okay."

                    The opening credits of the movie began to roll across the television. Rumble felt the pressure of both bodies wiggle just a little bit closer.

                    Cloudchaser's was especially warm. It almost burned against his skin.

                    "Blech, I hate these stupid lovey-dovey movies," Cloudchaser lamented. In the course of speaking she adjusted her body on the couch, muffling the creak of the shifting cushions with her speech. Rumble felt the tuft of Cloudchaser's wings against his own, the two sets of feathers brushing against each other. Cloudchaser's left front hoof was on the side of his stomach.

                    "Oh, shush. It's a beautiful movie... and there's a lot to learn about romance in a film like this, even for older ponies."

                    Flitter flapped one of her wings when she spoke, and the gust of air on Rumble's skin reminded how hot he felt.

                    The hoof on Rumble's side felt mostly nice. It was moving in soft circles, tracing against his fur and bringing a tingling along with it.

                    But it also brought to light how much his stomach hurt. It seemed to be deciding to invert itself again, and this time Rumble's organs felt in danger of periphery damage.

                    "Uh, can you guys excuse me for a second? I'll be right back."

                    Without waiting for a response Rumble jumped up from the couch, and only just held himself back from running out of the living room. The twins shared a glance as he left, but Cloudchaser's eyes hung on Rumble as he exited. Again, her teeth traced over her bottom lip.

                    Rumble leaned over the downstairs bathroom sink and splashed a deluge of cold water over his face. It helped, a bit. His skin still felt like it was on fire, and now his stomach was filled with accompanying lava.

                    Was he sick? He still couldn't be sure.

                    A sudden shift in his stomach made Rumble lurch and gag, and he braced himself for the forcible removal of his stomach's contents into the nearby toilet bowl.

                    Instead, the feeling inverted itself. Rumble's body internalized its desire to explode, and the resultant impact was a feeling like every inch of his skin was escaping. Rumble held back a scream of panicked discomfort only by virtue of the fact that his mouth felt like it was shifting too.

                    The cold marble of the toilet was suddenly on his chest. He grimaced with pain as one of his hoofs bashed abruptly into the nearby bathtub. And his wings brushed the shower curtain, causing the sometimes horrible sometimes wonderful noise of shifting plastic.

                    Rumble managed to restrain another gag before the force of his body's discomfort threw him to the floor. The perpetual shifting of what felt like every organ and inner working of his skeleton was beyond disconcerting – throwing up would have felt like a relief. Instead, Rumble felt stretched, and sort of bloated.

                    The shifting went on. Rumble wished he could muster the strength to right himself, but every time he tried to move his limbs cried out at him in protest, and they did so in a voice that was very unfamiliar. The floor felt much bigger all of a sudden, or maybe there was just more of it. Rumble could sense an entire body's worth of tile that encompassed a much larger section by volume than it ever had.

                    As far as he could define it, Rumble was in a sort of blissful agony. His skin was stretching. His wings were blooming on his back like demonic flowers.

                    And, against the cold caress of the bathroom tile, he felt something else growing much larger as well.

                    The universe did at last have some mercy, or perhaps his body in general. The feeling of rubbery expansion and compression died down, and Rumble caught his breath, exhausted purely from his body running its own internal marathon. It took him a minute or two to collect himself.

                    As he steeled his hooves to lift himself off the ground, Rumble heard a knock at the bathroom door.

                    "Rumble? Are you okay in there? We paused the movie, but you've been gone for fifteen minutes."

                    Flitter's voice... it sounded musical. Rumble pictured the pegasus attached to it – slim and tiny and fitted with that adorable bow on her head. Through whatever trickery of his internal perspective, Flitter suddenly seemed in Rumble's mind’s eye perfectly delicate and feminine; enough to rouse him from the floor, and rouse something else just a bit at the same time.

                    "I'm okay, just cleaning up."

                    Rumble's voice surprised him with its depth. It apparently surprised Flitter as well, given the gasp on the other side of the door.

                    "You don't need any help? You sound..."

                    "I'm fine. I'll be out in a second, okay?" Rumble pulled himself up as he spoke, narrowly avoiding a crash into the sink with one of his inadvertently outstretched wings.

                    "Okay... just don't keep us waiting any longer, okay?" Flitter requested with a hint of a giggle. Rumble waited until he heard the patter of hooves down the hall before he breathed a sigh of relief.

                    Standing in front of the sink, he hazarded a look at the mirror.

                    He had to brace himself on the counter to keep from returning to the floor.

                    Rumble wasn't sure if he was staring at himself or his brother from the reflection in front of him. Well... it had to be him for several reasons, he told himself. For one, as buff as his brother was, he'd never had muscles like that. And... well, the colours were all wrong. And the hair.

                   Rumble raised a hoof to his mane and ran it through the slick length of black, whisking it back in a suave kind of swirl. His lowered his hoof to eye level and traced his gaze along the limb it was attached to.

                    Rumble was very confident that, in excess of Cloudchaser's suggestion, he could bench-press either pegasus – or both, if he wanted to. His chest felt like a compressed barrel housing two sturdy lengths of plywood on front and back... and his wings felt like they could lift him through the roof and into the sky with a single flap.

                    And... elsewhere...

                    Rumble wasn't about to look, given the awkward logistics, but he could feel it slap against his leg when he moved. And, apart from the picture of a bent over Flitter with her taut little rear walking the hall, Rumble didn't have much to go on at the moment. Though, that though might suffice if given enough focus.

                    Taking one long, drawn out breath, Rumble fumbled with the doorknob for a minute after realizing it was now at a significantly different relative height, and let himself out of the bathroom, heading back to the living room.

Movie Time

                    "Wow! I can see what Cloudchaser was talking about... you look so strong, Rumble!"

                    "Thanks," Rumble answered, sliding his way along the couch back to his seat. He felt Cloudchaser's wing brush against him again, and this time he gave it a nudge with his own. The shiver along the length of feathers gave him a brief grin before he remembered to hide it.

                    "We paused the movie for you, Rumble," said Flitter, running one of her hooves over Rumble's shoulder as he sat down. "We didn't want to watch any of it without you."

                    Flitter's voice was different, almost sing-song. It was a sort of tease, but not in a derisive or schoolyard bully way – the kind that was inviting Rumble to answer the provocative tone in whatever fashion he deemed fit.

                    Rumble gave a nod of acknowledgement to Flitter, and she responded with a flood of blush and a tilt of her eyes down to the floor.

                    "Can I move just a little bit over here, Rumble? Your wing is so well toned, it's kind of hard to get comfortable when it's pressing against me like that," Cloudchaser said, already shifting her body on the couch.

                    "Oh, is it? I'm sorry. I can tuck them in a little bit further if you want."

                    "Oh no, don't worry about it. I'm sure I can make myself comfortable." Cloudchaser placed both of her forehooves on Rumbles wings and tugged gently, letting it fan out next to her. She wrapped the sturdy length of feathers around her back and moved even closer to Rumble, snuggling up against him and placing her hoof back against his stomach. This time, instead of grumbling and heat, Rumble only felt a stir between his legs.

                    Flitter unpaused the movie without speaking, but took up a position similar to her sister on Rumble's other side, nuzzling her face into his neck and entwining one of her legs around Rumble's as he sat.

                    Rumble wasn't paying much attention to the movie, but Flitter seemed to be, even if only out of the corner of her eye. Cloudchaser, on the other hand, was occupying herself with Rumble's chest, running her hoof along it and up over his muscular shoulders.

                    "I can't get over how toned you are," Cloudchaser half-whispered into Rumble's ear. Her hoof languidly traced against Rumble's skin, darting around his side and foreleg.

                    "Yeah?" Rumble's sudden baritone was easy to keep low as the movie played in the background.

                    "Yeah. You look... huge." Cloudchaser whispered the last word quietly, so close to Rumble's ear he could feel the breath tickling his earlobe.

                    He felt a twitch again.

                    Cloudchaser moved her hoof again, making the slowest arc along Rumble's side and down to one of his hind-legs, which she contented herself with rubbing. The proximity almost drew a gasp from Rumble, but he withheld any sort of exclamation. Cloudchaser might not realise how close she was to... how close she was, after all.

                    Rumble discarded that hypothesis when he felt Cloudchaser's hoof bump against him.

                    "Oh my gosh..."

                    He heard the whisper in his ear along with another light touch. He could feel the lip bite in the hushed exclamation, the blush in the way Cloudchaser's touch jerked ever so slightly, and an increase in heat as her body pressed into Rumble's side and wing a little bit more.

                   He didn't even feel that hard. Just... excited, more so when Cloudchaser's hoof bumped up against his length again.

                    "Look! Isn't that beautiful?"

                    Flitter's voice jarred Rumble out of his momentary occupation. He restrained a shout, but felt Cloudchaser's hoof jerk again, pulling away from Rumble's almost-exposed member for fear of getting caught.

                    "Hm?"

                    "Look how they’re kissing. It's so emotional! You'd never see that kind of kiss in real life." Flitter gestured pointedly to the screen where, indeed, two mares were open-mouthed kissing, separated at the moment (in Rumble's mind) from low rent cinema only by virtue of the soundtrack. Rumble didn't question where the intuition had come from – but it did make him feel a twitch again.

                    "Do you think you'll ever be kissed like that, Rumble?" Flitter asked, turning her attention away from the TV and looking at Rumble. Flitter stared into his eyes like she was trying gaze through him, and snuggled her body closer, almost using Rumble's muscular chest like a blanket.

                    "I, uh..." Rumble stuttered. It felt uncharacteristic given the present deepness of his voice, but despite all his rapidly appearing mental inklings, Rumble still had to admit to himself he'd never kissed anyone; there was no ground to compare experience.

                    Flitter seemed to catch on immediately.

                    "Have... I mean, I guess maybe you haven't had a first kiss? Which is crazy if you ask me... any mare would be dying to get her hooves on you." Flitter ran a hoof along Rumble's chest as she spoke. She seemed to forget that only yesterday Rumble had been the cute little brother than glared at her from upstairs. Now, he was simply the buffed out pegasus sitting next to her. There was something about the closeness – a sensation, or a smell, a sort of primal invitation that exuded from Rumble's entire body. She could feel herself leaning closer to it without any will on her own part.

                    The part of Rumble's brain now responsible for the enjoyment of Cloudchaser's hoof and the imagining of Flitter's backside spurred him into action. As the kissing continued on screen, Rumble reached one of his forelegs behind Flitter and pulled her closer.

                    "Ooh..." Flitter let out a little surprised moan as her body moved in accordance with Rumble's newfound strength. She looked into Rumble's eyes, but didn't speak.

                    As if he'd known to do it all along, Rumble leaned forward and kissed her like it was the most natural thing in the world.

                    Flitter's wings fluttered like they were trying to take off, batting helplessly against the couch as Rumble kissed her. He kissed her like he'd done it a thousand times, using forward pressure to leave Flitter feeling breathless. His jaw was so strong and well defined it made Flitter feel like she was under the romantic duress of an Adonis, and the burliness of the chest pressed into her body made her feel an electric shock of femininity. She was so small and powerless, and Rumble was the one to dictate the force of his own affection.

                    Rumble savoured the taste of Flitter's mouth like a wine, which upon reflection he'd never had before either. The soft sighs under the kiss were as exciting as the tenderness of lips and light tongue that accompanied them, and the frantic wing flapping was the icing on the cake.

                    When the kiss broke Flitter was panting heavily, and her tiny feminine wings were standing straight up on her back, signal poles to show that she had really enjoyed Rumble's attention.

                    "Wow," she said, clutching a hoof to her own chest.

                    "Hey, no fair! If she gets a kiss, I want a kiss too!”

                    Cloudchaser’s voice broke the revelry of the kiss with no regard for the thought of ‘cooling down’.

                   Rumble turned to find Cloudchaser grinning at him. She had edged down the couch as soon as she felt Rumble turn, and now she was standing on all four legs at the far end of the furniture. She flipped her sparkling silver mane and bit her lip for a moment before smirking again.

                    "Come on big-guy, it's only fair. Just a quick peck, if you're worried about it."

                    Rumble sprang on her like a cougar on prey. Cloudchaser didn't have time for the 'eep' to escape her lips as Rumble placed both his forelegs on Cloudchaser's shoulders and drew her closer. The kissing had been second nature the first time – now it was an adventure. Cloudchaser didn't flap her wings like her sister, but she did blush profusely and drag one of her hind-legs against the couch in a sort of desperate grasp at nothing.

                    Flitter had just enough time to recover from the kiss when she looked down to see Rumble ravishing her sister. Normally the semi-permanent sibling rivalry between them might have gotten a yell or interruption, but right now she could only watch. Her wings were painfully stiff, jutting out in an obscene portrayal of her excitement – and, as she looked onward at the newly grown-up Rumble doing what came naturally, she noticed a sign of arousal from one of the other ponies in attendance.

                    "Oh my gosh!" she yelled, echoing her sister's previous sentiments at a higher volume.

                    Though Rumble had been loath to check himself, the piece of meat only feet away from Flitter was huge. Not disconcertingly huge – manageable, theoretically – but gigantic at least in its presence. Flitter wasn't experienced enough to hazard a guess at the inches, but the member was, if she had to speculate, almost as long as her foreleg. And thick.

                    In the course of the ongoing make-out session Cloudchaser had managed to work herself backwards, and began to lie on her back as Rumble pressed closer with every kiss in a long string, breaking apart to allow the tiniest gasp of breath before continuing. Cloudchaser's breathing was a delicate squeak so divorced from her usual bravado that it only spurred on Rumble's enthusiasm, leading quite directly to the full display Flitter could see from her end of the couch.

                    She couldn't just let it be. In the same way that Cloudchaser's hoof had been forced through necessity, she needed to touch it.

                    Unlike Cloudchaser's gentle prod, Flitter pressed both hoofs to the engorged shaft and gave a long stroke.

                    Rumble let out his first groan of the evening, and his burly teenaged (physically, though technically questionable) wings flared out just a bit from his body. Cloudchaser met the noise with her own passionate moan, and wrapped her forelegs around Rumble, digging her hooves into his back.

                    "Rumble... you're so big..." Flitter ran her hooves along Rumble's indeed sizable shaft once or twice, sending shivers up her own spine rather than the recipient of her attention. Not that he didn't notice at all – compared to the hesitant attention of his own earlier poking, even in contrast to Cloudchaser's sultry examination, Flitter's hooves felt amazing – but Rumble couldn't pull his attention away from the writhing, moaning mare underneath him, and his mouth required a great deal more articulation than a simple flexing of a muscle between his legs. If he had the opportunity to relish in the sensation he would have, but for now he managed to restrain his body's reaction in the interest of further attention.

                    Cloudchaser was the one who broke the flurry of Rumble's kiss, holding one of her hooves up between her mouth and his. Rumble only had a moment to pause in potential confusion before Cloudchaser pulled his head forward and locked her mouth to Rumble's neck, kissing and sucking at his skin insistently and nipping every other time with her teeth. As she guided the trail of attention towards Rumble's shoulder, Cloudchaser bit down once, hard, digging her teeth into Rumble's skin. It was an action she couldn't restrain; everything about the pegasus standing over her sent Cloudchaser's body into a frenzied lust that wouldn't have been out of place in primitive Equestria, a pure expression of male dominance and the arousal of strength and stature. Rumble was big, and he had dived on Cloudchaser like she was a meal to be devoured. And, Celestia, did she want to be devoured.

                    Cloudchaser withdrew her love bites at Rumble's shoulder, savouring the taste of the musk in her mouth from the virile colt's skin. She placed one hoof on either side of Rumble's face – that face, so chiseled and youthful at the same time – and guided it towards her own neck. Rumble took the direction immediately.

                    "Gah!"

                    Cloudchaser couldn't hold back her shout as Rumble's teeth bit into her neck – gently, for the colt, but enough to send convulsions up Cloudchaser's spine. She wanted him, wanted him so badly, those wings and that chest and those muscular legs, and oh goodness his mouth that was biting her neck now, sucking on her soft skin and moving down to her chest and oh please please please-

                    She couldn't leave Rumble's attention to chance, not when she needed it this badly. As softly as she could manage, her bodying screaming at her in two directions to not display the slightest bit of dominance, but at the same time begging for more, Cloudchaser nudged Rumble's head down ever so slightly. Hoping, praying, needing him to go down-

                    "Ah!" Cloudchaser gasped as she felt rumbles tongue trailing down her stomach over her belly-button. Close, so close...

                    For the first time, Rumble found himself facing the most intimate part of a mare. His mind recalled various illustrations and instructions akin to what he’d tried to remember that morning about his own body – regardless of instruction, he didn’t remember hearing that things would be this wet.

                    With slight trepidation, Rumble gave the bit of quivering flesh a tiny lick.

                    “Ohhhh, please, Rumble…” Cloudchaser moaned. She tried to ask as much as she could without really asking. Rumble was in charge, she reminded herself. But, please…

                    Rumble licked again.

                    Cloudchaser threw her head back and dug one of her hooves into the couch, the leather squeaking with the force of her excitement.

                    Flitter, meanwhile, had begun to notice the toll of watching her sister moan and squirm about under Rumble’s attentions, and was now adding her own bit of liquid embellishment to the upholstery. And Rumble’s big long shaft was there right in front of her, dangling and begging for attention. She wanted to touch it more, but her hooves begged her attention elsewhere, and she gasped sharply as one of them found its way between her hind legs. Soaked. She had felt a trickle of excitement the moment she’d smelt the musk exuding from Rumble’s body, but now she was dripping in earnest, watching her sister buck her hips up into Rumble’s mouth.

                    Despite his lack of experience, Rumble didn’t have a hard time believing he was doing a good job. Every time his tongue lapped out over Cloudchaser’s lips, her whole body arched up to meet the attention. Rumble slid the tip of his tongue through the dripping folds of skin in front of him for the first time – the scent made him twitch again, and the taste once more. Something just slightly bitter but with a tang that sent something on fire in the back of his brain, an urge that he’d never known was there until this morning. He wanted to do more than lick, he wanted to raise himself up and put the rest of his body to use–

                    Rumble almost jumped when he felt a hoof on his member again, tugging downwards, almost trying to pull him away.

                    “Rumble, please, I want a turn too,” Flitter begged.

                    Rumble turned his gaze sideways to see Flitter pawing at his cock – that was the right word for it, wasn’t it? – with one hoof and frantically rubbing the other in circles lower down on herself. Even though Rumble had only just kissed her, Flitter looked like a mare in heat – her hair was dishevelled and hanging out oddly from her bow, and her eyes were half-closed alongside her blushing cheeks. She looked like a pony desperately in need of something.

                    “You don’t have to touch me, please, I just want to touch it, and you,” Flitter said, giving several pointed strokes to Rumble’s eager erection.

                    The attention drew the first proper groan from Rumble, which elicited a chain-reaction moan from Cloudchaser as the mouth against her pussy murmured on her sensitive flesh.

                    If it were up to Cloudchaser, of course, Flitter might be just be completely ignored – but Rumble wasn’t about to play favorites.

                    Rumble withdrew his head from between Cloudchaser’s legs with his snout dripping, and the sight made Flitter quiver even more in her haunches than her own touching had done. With Rumble facing her, Flitter batted her eyelashes as seductively as she could manage while holding herself back from pouncing on Rumble’s dick.

                    “Please?” she asked. “Can you lie down for me?”

                    Rumble nodded, and took back his seat in the center of the couch. Cloudchaser held back a potential sigh of disappointment as she the lingering throes of Rumble’s tongue jittered through her.

                    As Flitter jumped down from the couch at Rumble’s front looking like a filly given a treat for desert, it occurred to Rumble that despite all his instinct and subconscious direction, he was still very much new to all this. It was one thing to touch another pony and feel their reaction, to know they felt good and that you were causing it – it was an excitement like Rumble had never felt – but even the touch of hooves on his penis had felt unknown, and so good it was almost worrying. He was downstairs with two svelte pegasus twins, and the juice of arousal from one of them was dripping off the end of his nose.

                    He was grown up though, wasn’t he? So what was left?

                    “-!”

                    Rumble grasped at the couch wordlessly as he felt in a matter of seconds what amounted to the best thing he had ever felt in his life.

                    Flitter smiled up at Rumble and licked the length of his shaft seductively, trying her hardest to keep composure given the fire of arousal still burning between her legs. Rumble’s cock was massive, and she wanted nothing more than to devour it completely, choking herself on the virile piece of meat waiting for her attention.

                    Rumble’s reaction to the lick was enough to tell Flitter to go slowly, however. With a sultry grin, she gave another lick up the side of Rumble’s cock and held back a giggle when he groaned loudly, arching his back forward and presenting as much of his sizable shaft as possible.

                    “Is that good?” Flitter asked, giving a tiny lick to the underside of Rumble’s head and delighting in the twitch that it gave in response.

                    “Yessss…” Rumble hissed. He hadn’t been ready for this. Somehow the feeling of attention on his newly discovered male prowess had been the perfect thing to remind him how young he had been that morning, and the rush of adolescence vanishing was coursing through his mind rapidly. He remembered the discomfort and the growth, how he’d felt like a disoriented mess in the wrong body. Suddenly, the body had felt right, but the rest of his brain had still been catching up. Kissing and licking had been like a game, but this was really growing up, and it made his stomach feel sick again.

                    Rumble’s stomach lurched as Flitter took the first few inches of his cock entirely in her mouth.

Celestia help me.

                    Flitter was half way down, pacing herself and breathing calmly through her nose when she felt a twitch. Then another. The third one was strong.

                    The feeling in Rumble’s stomach vanished as quickly as it had come, but not without a particular stretching sensation again. This was a center of gravity expanding outward.

                    With his dick still in Flitter’s mouth, Rumble finished growing. His limbs stretched out several more inches, thickening strong enough to overturn an applecart without a second thought. His wings grew fuller, and his chest barrelled out. Where before he had looked like a somewhat staunch and boisterous teenager, his skin now felt stretched to proportions he’d only seen from afar, more befitting to a castle-guard or strong-arm at a bar.

                    And, his cock grew as well.

                    Flitter gagged as the sizable length she had already been having a difficult time with swelled in her mouth. The tip flared and tickled the back of her throat, and only through sheer force of will did she manage to quell her gag reflex. Her cheeks bulged with the size of the thing she was sucking on. Miraculously, she managed to keep the bit she was attending too inside her mouth, but it was considerably thicker, and now with a bit more to go before she hit bottom.

                    Instead of just the couch, Flitter was now soaking the living room carpet as well.

                    Taking in as much breath as she could, Flitter forced her head down, struggling to take even another inch of Rumble’s new size inside her mouth.

                    With the feeling in his stomach gone, Rumble could be focused now. The sensation of Flitter’s tiny demure mouth fighting to swallow any more of his size was ecstasy. Flitter’s mouth was hot and wet and her tongue was pressed against the underside of Rumble’s shaft, forced there by necessity lest she be unable to fit more than an inch inside. And Flitter’s wings were still erect, fluttering every other moment as she tried desperately to bob her head up and down, succeeding instead on only moving two or three inches in either direction.

                    Rumble felt a tap on his side, or more like a nudge with a hoof, followed by something pressed into his chest.

                    That something turned out to be Cloudchaser’s flank. She shoved herself against Rumble’s muscular body, grinding herself on his skin and coating him in a constant stream of her arousal.

                    “Rumble, c’mon, you don’t wanna give Flitter all the attention, do you? You’d have way more fun in here than in there.” Cloudchaser gestured pointedly to her dripping slit as she spoke, and gave a seductive wiggle of her ass practically right under Rumble’s nose.

                    Rumble wasn’t sure if he should agree – but Flitter’s mouth did feel amazing. The scent wafting up from Cloudchaser wasn’t helping his decision making process at all either – instead of picking one or the other, Rumble felt helpless, trapped as a victim of the attention from both girls. Flitter’s mouth was so small it felt like a vice, and the friction and wetness were all new feelings that Rumble wasn’t sure how to deal with.

                    He felt a stirring somewhere else, a new sensation that came only with growing up.

                    He didn’t know to give any warning.

                    Flitter was the first of the three to notice, feeling the results even before Rumble did. She felt the head in her mouth flare, and tried to hold back another gag when it hit her.

                    Hot, thick cum in the back of her throat. So much of it. The first attempt to swallow was already in vain – Flitter knew the only recourse to keep herself from choking was to pull Rumble’s cock out of her mouth, which she did just in time to get the second spurt right in her eyes.

                    Rumble could form no words. He managed to keep his eyes open, locked in what felt like a transcendent state. His eyes were open, so he couldn’t be dreaming, but the feeling coursing through him couldn’t be real. It made every nerve in his body twitch like lightning, and very particularly between his legs. It felt like a million doses of lesser relief rolled into one, so great and amazing that Rumble wanted to shout, but couldn’t find a way to make use of his tongue. And the sight–

                    Flitter blinked through the second shot and opened her eyes. She placed both her hooves at the base of Rumble’s cock and felt him twitch again, the flared head of his dick bobbing before spraying another jet of cum into Flitter’s face. She was happy to catch it, and let out a low moan as the thick creamy load splashed across her forehead and cheek. Cum dribbled out of her mouth from the first spurt she had caught, and more than a bit of it dripped out the side of her mouth and landed on the floor where it mixed obscenely with her own juices.

                    All the while Cloudchaser continued to grind her cunt against Rumble’s chest, eyes wide at the load he was delivering to her sister. The fourth jet was smaller at last than the first three, and Flitter’s entire face looked painted in cream, dripping all over her skin like a face-wash.

                    The last bit came out as a dribble, trickling down the head of Rumble’s cock and sliding down the length of his shaft, which remained rock hard.

                    “Ohhh….” Flitter moaned as she took a hoof to her cheek absentmindedly, tracing it along the deposit of jizz coating her face.

                    “I, uh…” Rumble stuttered. He wasn’t sure what to say. Part of him felt like apologizing. “…I’m… sorry?”

                    The words were hard. Rumble had never felt more out of breath in his life.

                    “Dude, don’t be sorry! You fucking coated her! I’m jealous,” Cloudchaser said, pulling her cooch off Rumble’s chest and flapping her wings down to her sister’s side.

                    “You are?” Rumble asked, dumbfounded. He wished he could find the confidence he’d had when kisses were all that was called for.

                    “Hell yeah! I’ve gotta get some of that…”

                    Rumble’s mouth fell agape as Cloudchaser grabbed her sister’s cum covered face with both hooves and pulled her into a kiss.

                    Where Rumble’s first kiss with each girl had been moderately restrained, the act he watched from the vantage point on the couch was completely the opposite. He felt himself twitch in a jolt of arousal as Cloudchaser lathered her tongue inside Flitter’s mouth, taking as much cum as she could and swallowing it before returning to the kiss, wet and filthy and dripping with spit and semen.

                    Flitter panted as the kiss subsided, and she took a moment to wipe some of the cum off her face which she happily licked off her own hoof, smiling and moaning softly as she swallowed.

                    “Rumble’s a real stud, huh?” Cloudchaser asked, smirking to her sister.

                    “He… yes, I’d say that’s true,” Flitter responded, still panting a little from the excitement of her unexpected facial.

                    “Can we give him a bit of a treat before I have my turn?”

                    Flitter nodded.

                    “Of course.”

                    Rumble wasn’t sure what was in store, but he did feel another twitch as the twins grinned at each other before turning to him.

                    “We hope this means you’re feeling better,” said Cloudchaser before she dived her head forward. Flitter followed wordlessly.

                    Rumble couldn’t turn his eyes away despite every pleasure sensation in his body urging him to do so. Flitter and Cloudchaser took up one side of his cock each and licked delicately against his sensitive skin, pressing their mouths to his erection and kissing it, lathering their tongues all over and coating his shaft in saliva.

                    Both twins bobbed their head up and down several times, once or twice meeting at the front under Rumble’s glans to exchange another sloppy kiss, trails of their saliva coming with them as they returned their attention to the full-attention erection in between them. After a few more licks, Cloudchaser seemed content that Rumble was fully prepared, and lifted herself off the floor with a few flaps of her wings.

                    “Flitter had her fun, but now it’s my turn,” she said simply, turning herself in a half-circle and facing toward the television where the movie still played, forgotten.

                    Flitter lifted off the ground in a similar suit, flapping instead towards Rumble’s chest as her sister made her place over the giant length of cock waiting for her.

                    Rumble gasped as he felt the touch of a new set of lips at the tip of his cock. Much warmer, and much slicker, so perfect in shape they felt like they were pulling him in. Cloudchaser turned her head around and grinned, bobbing herself up and down on just the tip several times.

                    Without warning, she drew her wings in and let herself drop.

                    Rumble opened his mouth to gasp, but found his sound blocked by something on his mouth – Flitter taking the place of her sister from earlier, pressing her pussy into Rumble’s snout.

Is this what growing up feels like?

                    Rumble’s cock was far too big for Cloudchaser to take in one go, but she managed to fit about half inside herself. The feeling was the best combination of ‘stretched’ and ‘full’ she’d ever imagined, and the way Rumble’s sexy muscular limbs supported her as she rested her weight on them was an added bonus. Shuddering from the feeling of the giant love-muscle deep inside her, Cloudchaser managed to raise herself up an inch before falling back down, taking in slightly more of Rumble’s cock as she fell.

                    “Gah! Rumble, you’re fucking huge…” Cloudchaser muttered, partly to herself, as she tried to get another inch or two inside herself. She was still tingling from Rumble’s tongue earlier, and his cock-head pressing against her inner-walls put her back in memory of how good the attention to her cunt had felt.

                    Rumble couldn’t have responded if he wanted to. Flitter was grinding herself brazenly on his face, and doing the only thing he could imagine was appropriate, he had extended his tongue and lapped up and down at the wetness smearing across his snout. Flitter had moaned and pushed herself forward, positioning herself just so and letting Rumble’s tongue lap over her clit. Her wings were doing overtime to keep her aloft, an extra difficult feat given their stiffness due to her constant arousal. Somehow she managed, but every so often the flapping quelled mostly and was replaced by a foreleg on Rumble’s shoulder, Flitter trying her hardest to keep herself aloft and basking in the ministrations of Rumble’s tongue.

                    “Celestia help me, I dunno if I can fit any more of this monster inside me… does this feel good for you stud?” Cloudchaser asked as she bobbed herself up and down on as much of Rumble’s cock as she could manage, leaving just a few inches outside. She wasn’t sure, but she thought she could feel Rumble’s head hitting her womb on every other thrust, and the thought made her shiver.

                    If the spit from the twins’ attention hadn’t been enough lube, the constant dripping of Cloudchaser’s arousal would have been more than sufficient. She was coating Rumble like a faucet, taking away any remembrance of cold water or sweat in place of hot arousal-scented girl-juice.

                    Rumble noted vaguely he’d been asked a question. Thinking was the second hardest thing in the world at that moment, apart from his cock. He tried to form a sentence.

                    “Yes,” he managed.

                    “Fuck yes it does… I dunno how good my pussy feels, but you’re gonna make me cum in no time with this giant thing slamming my cunt.”

                    If Flitter could have spoken she would have assured Rumble that her sister’s vulgarity was completely normal given her personality – but at the moment she could do nothing but moan as she ground her hips forward onto Rumble’s face, rubbing herself up and down on his tongue like a toy in sexy buff colt form.

                    Rumble wasn’t sure if he was close. It did feel good – so good that he wasn’t sure he could break the sensations apart. Most of his attention was on the set of puffy lips and love button rubbing over his mouth, with at least partial attention on remembering to breathe. Cloudchaser’s pussy clenching around his dick did feel amazing, but it seemed like she was enjoying it more than him – he could feel her body shake when she bottomed out, and the way her hind legs twitched against his when she started to swivel back and forth with Rumble’s head all the way inside her-

                   “Oh, fuck, I’m gonna cum!” Cloudchaser announced, slamming herself down on Rumble’s cock as hard as she could.

                    Just as Flitter had felt Rumble’s warning an instant before anyone else, Rumble felt the clench of Cloudchaser’s insides on his shaft before the pegasus had announced her arrival. He felt a similar sensation, though less direct, on his tongue as Flitter grabbed the back of his head and forced it forward, burying his nose in Flitter’s slit.

                    “Gah!”

                    Cloudchaser spasmed hard on Rumble’s dick, and the flood of her arousal increased instantly, spraying Rumble’s crotch with girlcum and soaking his fur where it had been at least partially dry before. Flitter’s orgasm felt much the same, threatening to drown him as Flitter squeaked the announcement of her climax. She held back from words, but gave out a long continuous squeal as she came, rocking her hips back and forth and grinding against Rumble’s face.

                    Rumble felt himself twitch in response to the twins, his body reminding in no uncertain terms that two pegasus girls had just cum on either end of him.

Follow suit, it said.

                    Cloudchaser collected herself relatively fast, though her panting followed the same way her sister’s had after her first orgasm.

                    “Ahhh… your turn, Flitter, if you’re up to it,” Cloudchaser said as she lifted herself off of Rumble’s still achingly hard cock with a flap of her wings.

                    Flitter didn’t manage to mumble a proper response, instead using most of her energy to keep her crotch enough off Rumble’s face to give him room to breathe.

                    “Come on, sis, you’ve gotta try it. Rumble’s a fucking beast… I coulda cum way more if I’d kept going.”

                    Flitter murmured something neither of the other ponies could make out. She managed to lift herself up with a pathetic set of flaps from her still stiffened wings, and landed on the living room carpet where she had been before, giving Rumble her best attempt at head before he’d coated her in cum.

                    Rumble still wasn’t sure what to make of the situation. His cock was eager for more, but his head was still spinning.

Is any of this really happening?

                    “I… I do really want you to, um… to…”

                    “Fuck you?” Cloudchaser chimed in, provoking a rash of blush from her sister.

                    “Yes… but, uh… I’m a bit worn out from all that sort-of-flying. I don’t suppose you could…”

                    Rumble stared blankly at Flitter. In so much as he could intuit to put his dick inside her, he wasn’t sure what sort of specifics the pegasus might be requesting.

                    “Oh, here… like this.”

                    Flitter’s sudden timid demeanour seemed to go part-in-parcel with her normally meek composure, but it was emphasized a hundred times by the sheer size of the colt she was asking to be fucked by. Still, actions spoke stronger than words.

                    Still blushing, Flitter turned herself around and waggled her rump at Rumble, flitting her tail up seductively. Purely at her body’s behest, Flitter’s pussy winked, a vulgar action which only made her blush harder.

                    In an animal reaction, Rumble felt himself twitch again.

                    “Did you see that man? She’s fucking turned on as shit! She wants you bad.”

                    In the same fashion that Flitter’s personality had become amplified by Rumble’s proximity and attention, Cloudchaser seemed to have turned her brashness up to eleven in the heat of her arousal. Rumble bet that if he was to bend the louder pegasus over she might yield a similar reaction… but, there was one filly already waiting for his attention at the moment.

                    Rumble lifted himself off the couch, feeling a slickness against the leather from his own sweat and the doses of liquid arousal the twins had given him. With Flitter’s ass waving in front of him, his movement was guided by instinct – the momentary awkwardness of lining himself up was overruled by Flitter’s whimpers as she felt the heat of Rumble’s head poking at her from behind.

Maybe that’s all growing up means… that instinct is finally enough to go by when the situation called for it?

                    Rumble felt the sensation of winking lips against his cock-head, slick and hot as they had been moments ago from Cloudchaser but a hundred times more insistent, begging for his attention, begging to be fucked.

                    Rumble slid forward nervously.

                    “Ohhhhhh…” Flitter moaned from underneath him, uncharacteristically loud in the height of her excitement. Her sister had been right – Rumble was huge, and the sensation of his giant cock filling her up even just a little bit was fantastic. She could feel her pussy clenching without direction, grasping at Rumble’s shaft like an eager mouth needing more.

                    Rumble groaned as Flitter’s pussy squeezed him. Cloudchaser had been tight, but Flitter was demanding. He could feel the urgency in her requests from her body’s attempts to pull him further in, and every time he managed to slide in another inch the clenching was harder.

                    He felt a familiar stirring, the more pleasant of the few that had wracked his body in the last twelve hours.

                    “Flitter, I think I’m gonna-“

Cum, they had called it?

                    Just like last time, Flitter felt it first. She gasped, and her wings puffed out as far as possible from her back. Her pussy clenched.

                    Rumble leaned forward while trying to keep as much weight off Flitter’s back. He groaned, and felt himself twitch harder than he ever had before, the relative sensation of his cock throbbing being one he was only still getting used to. He felt his balls tingle, an identification to the intangible feeling of something somewhere needing emptying. His shaft surged and his head flared, and before he knew what was happening he was cumming again, this time spraying his load right into Flitter’s desperate wetness.

                    Flitter gave another high-pitched squeal as she tried to grind herself back, finding herself already near the limit of her depth as Rumble’s cock pressed inside her. She could feel the heat of his sperm as is it coated her insides, spraying in spurts of what felt like gallons. Her pussy quivered as Rumble emptied burst after burst of his jizz inside her. She could feel it pooling up, sloshing around and coating the head of the cock pressed up against her walls.

                    “Oh, Rumble, yes, inside, please….” Flitter mumbled, her face hot with embarrassed lust.

                    Cloudchaser, standing beside the pair, couldn’t see the results, but she pieced it together from the groans of both parties and the thrusting of hips together.

                    “Oh shit, is he cumming in you? Fuck, that is so fucking hot!”

                    Normally Flitter would have reprimanded her sister for her language – but now was neither the time nor the place, and Flitter was revelling in the feeling of Rumble’s final burst of cum as he emptied the last bit of his load into her stomach. She could almost feel it sloshing around, filling her up and making every bit of her insides sticky…

                    “I’m sorry,” Rumble mumbled awkwardly. For some reason the sensation of orgasm left him with an indescribable guilt – as though nothing should ever be able to feel that good.

                    “Don’t apologize, please, so good…” Flitter answered, shaking her hips from side to side and rubbing herself on Rumble’s cock.

                    He was still totally hard.

                    “Okay, I think this whole ‘taking turns’ thing isn’t gonna work, because seeing you cum like that makes me want some real bad. I have an idea.”

                    Cloudchaser pushed at Rumble’s flank with one of her hooves. Rumble looked at her confused, and she rolled her eyes giving another soft shove.

                    “Pull out, just for a second okay?”

                    Rumble complied, pulling himself out of Flitter’s still twitching cunt. His head sprung free with a ‘plop’ – and was followed by the splash of an entire load of cum spraying onto the floor and the insides of Flitter’s hindlegs.

                    “Ohhh…” Flitter moaned as she felt the waterfall of jizz empty onto the carpet. So much cum that had been inside her…

                    “Sweet Celestia! That is a lot of cum. And you’re still ready to go!”

                    Rumble ran a hoof through his mane in embarrassment. He wasn’t sure guilt was the right thing to feel, but having Cloudchaser call attention to the still eagerly swinging piece of meat between his legs was a little embarrassing.

                   “Well, don’t worry, we’re still ready to go to… aren’t we Flitter?” Cloudchaser nudged her sister’s side as she spoke, bending over to take up a mirror position.

                    “Mhm-hmm…” Flitter moaned, and waggled her ass seductively against her sister’s, bumping flanks together and prompting Cloudchaser to follow suit.

                    “Come on. You’re not done until you rut both of us until we can’t walk, okay?”

                    Rumble stared at the pair of waiting holes in front of him, two silver pegasi waggling their marehoods seductively under his face and begging to be filled up with his stiff rod. His cock twitched underneath his stomach, flinging a tiny drop of cum left over from his last orgasm up against his skin.

                    He hoped very much that his brother wasn’t planning on coming home any time soon.

Morning After

     The bed sheets were a mess again. Tangled and thrown everywhere, and accompanied by the feeling of perpetual dampness, like they themselves were sweating. Rumble groaned and threw the blob of white fabric sideways, sending half of it off the bed.

                    “Hey! I was using those.”

                    Rumble‘s eyes widened. He wasn’t used to hearing another voice in his bedroom, especially waking up in the morning. With a creak of the bedsprings, he turned sideways, noting his place in the middle of the bed instead of on the side as usual.

                    Cloudchaser grinned at him from her pillow on his left. Her normally well-styled silver mane was a mess, looking like she’d been run through a regular marathon with no cool-down shower for weeks.

                   Rumble’s mind drew a blank, and his mouth almost hung open in shock at the lithe pegasus lying in bed next to him.

                    “Morning, big-guy. You sleep well?” Cloudchaser ran one of her hooves along Rumble’s chest as she spoke, tracing circles against his skin and fur.

                    “I, uh…”

                    “Too tired to talk, huh? I don’t blame you. Me and Flitter were pretty burnt out too, but you definitely worked harder than either of us… I’m surprised you’re awake at all!”

                    Rumble blanched.

                    He remembered, suddenly.

                    The blankets that had remained on the bed were tented at the bottom of his legs. Grinning, Cloudchaser lifted away the mountain of white to reveal a very perky Rumble standing at full attention.

                    “Wow. After last night you’re still not worn out, huh?”

                    Last night…

                    Rumble felt like he might be properly grown up after last night.

                    He and the twins had fucked until sheer exhaustion had overtaken them, and then retired to the bedroom where they’d managed to fuck some more. Thunderlane had sent a note home that he’d be delayed at work, but that he was one hundred percent sure Flitter and Cloudchaser wouldn’t mind looking after Rumble for the night.

                    He was one hundred percent right about that.

                    Rumble felt a hoof against his morning wood as the details flooded back to him.

                    To his surprise, he felt just as big as he had the day before.

                    Which meant Zecora knew how to make a hell of a good potion.

                    “Got time for a quickie before Flitter comes back? She got up early to make breakfast… but there’s something I’d rather eat up here.”

                    Rumble didn’t have to respond – Cloudchaser’s mouth was already hovering over his penis when she finished her sentence, and the moment Rumble tried to speak his words fell away with the sensation of an eager mouth on the head of his cock.

                    “Mhmmm,” Cloudchaser moaned. As Rumble had learned last night, Cloudchaser was much more vocal than her sister; a trait that apparently carried over to fellatio as well. The humming feeling was nice, sending a tingle up his entire shaft and a twinge through his balls as Cloudchaser lowered her mouth and took in a few more inches of cock.

                    Rumble adjusted himself as Cloudchaser began her blowjob in earnest. Where he had been sleeping last night, Rumble had felt too big for his bed – unsurprising, given its intended use for a tiny colt instead of a full grown stallion and his two bedmates. Now, for some reason though, the size felt just a bit more familiar. The pillow he was using didn’t have to press up against the headboard, and his wings didn’t stretch off the sides of the bed when they were flared out.

                    Cloudchaser moaned loudly as she hit the capacity of her mouth, fitting three quarters of Rumble’s shaft inside and tickling the back of her throat.

Hadn’t she only been able to fit half last night?

                    As Cloudchaser’s hair fell over her face, she stared up at Rumble with her eyes wide, batting her eyelashes in a sultry fashion. She paused her head bobbing to lick at the underside of Rumble’s shaft. Rumble felt himself twitch as Cloudchaser stilled her tongue and closed her eyes, steeling herself and pushing her head further forward.

                    Rumble felt Cloudchaser’s lips at the base of his shaft.

                    His wings were stiff from arousal, but the edge of the bed was further away now.

                    And there was a familiar feeling… like a stomach ache, or an itch beneath his skin.

                    What was the opposite of a stretch?

                    Cloudchaser continued her bouncing unabated, now taking the whole of Rumble’s cock into her mouth and slobbering obscenely over the entire length. Her moaning went on, sending shivers along Rumble’s spine and tinges of further excitement through his balls, which Cloudchaser grazed lightly with her hoof.

                    Rumble felt paralyzed. Cloudchaser’s attention was ecstatic, but the rest of him felt like he wanted to throw up again – or to get up, to run to the bathroom and look into the mirror, to see if what he was feeling was real-

                    Cloudchaser wasn’t bobbing her head anymore – she was moving it up and down in short several inch movements. Her lips were stronger now, pressed against Rumble’ shaft instead of the insides of her cheeks.

                    And amidst the surging in his stomach and the feeling of his body compressing upon itself, Rumble felt a strong twitch, and a reminder at the back of his head.

                    “Cloudchaser, I think I’m-“

                    His warning was devoid of depth and husky tone. He sounded like a kid asking for a cookie out of the jar.

                    “Mhm,” Cloudchaser murmured over the cock in her mouth. She didn’t open her eyes or look up, but continued her sucking.

                    An instant later, Rumble came.

                    One, two, three squirts. Cloudchaser swallowed all three of them, and pulled her head up with an ‘ah’.

                    Rumble stared up at her. The world at once seemed much bigger again.

                    “Oh… wow. Look at you.”

                    The words of someone not sure entirely what to say.

                    “Am I…?” Rumble began to ask, but found the answer in his own voice. It sounded just like the colt who had begged Zecora for her potion in the forest.

                    “Huh. You, uh… you look a little… younger, Rumble.”

                    “I do?” Rumble asked, almost with tears in his eyes. He had been so sure. Zecora’s potion had worked, and he’d endured stomach aches and shifting, and then been rewarded with…

                    “Yeah. You look like… wow, you do not look like I remember from last night. Ohmigosh, last night…”

                    Rumble would have blushed if he wasn’t so distraught.

                    Cloudchaser was in a bit of a state herself, torn between wanting to comfort the obviously distressed colt lying in front of her, and the realization that she’d just spent an entire night in what essentially amounted to roundabout foal-fiddling. Even the memory sent a twitch in between her legs though… well, Rumble had been an adult then, so maybe it was all good.

                    Of course, he was a colt now, and Cloudchaser could taste his cum on the back of her throat.

   "You were... when we showed up you were in bed, and you were normal size... but then you... and we..." Cloudchaser was talking mostly to herself, trying to puzzle out how the visit had gone from a check up to a three pony rutting in the living room.

   "I guess... I remember feeling your wing, and it was so well-formed and buff, and you looked just a little bit bigger than I remembered. And then you, uh... looked a lot bigger."

   Cloudchaser hazarded a glance in Rrumble's direction.

  "I guss we just got a little... carried away."

                    Rumble sniffed in an attempt to hold back his despondence.

                    “Oh, jeez… listen, uh, little guy–“

                    “Don’t call me little!” Rumble huffed, and turned sideways. He was barely big enough to reach halfway down the bed now.

                    “-Sorry. Listen, uh, Rumble… I dunno what happened last night really. I mean, I know what happened, but I don’t know why you, uh… and Flitter and I…”

                    The words weren’t helping. If Rumble had clarity to spread on the situation, he was withholding it in interest of his own depression. Which, in his mind, he had every right for. So close, he had been so close to being a proper grown up, and now it was all gone after one of the best nights of his life that he’d never have back…

                    “Look. That’s not important. I uh… I can’t see that happening again while you’re so, uh… I mean, I’m not sure what to say. You’re just a kid, Rumble! We shouldn’t have been doing stuff like that with you in the first place!”

                    “But I’m not a kid!” Rumble protested, turning back to face Cloudchaser. “Or at least, I wasn’t then… and I’m not supposed to be now either.”

                    “Well… okay, fair enough to your first point. I don’t know about that second part though. I mean… you look like a kid to me.”

                    Rumble’s eyes teared up, and Cloudchaser tried to form a different counterpoint.

                    “That’s not a bad thing! I mean, you’re cute as a kid. You’re adorable!”

                    “I am?” Rumble asked, not sure if he should wear the description like a badge of shame or triumph. He crinkled his eyes as Cloudchaser rubbed his head with her hoof.

                    “Yeah, you’re the best! And, uh… I mean, when you grow up, if last night is any evidence…” Cloudchaser coughed loudly before continuing. “I’m sure you’ll have plenty of mares wanting a piece of your business.”

                    Rumble looked up hopefully at Cloudchaser, asking without words if she thought she was telling the truth.

                    “Just, uh… not us. Right now.”

                    The two sat in silence for a moment. Cloudchaser tried to keep herself as composed as possible, but still found herself reminded that as much as she protested, she had just swallowed a spray of little Rumble’s cum only minutes ago.

                    Rumble wasn’t sure what to think. He’d had everything he wanted, and then had it pulled away from him. Was there a positive spin on that?

                    Well, maybe.

                    Rumble had gotten a preview of what was to come. More correctly, he had gotten a preview of one very particular aspect of adulthood – and he’d loved it, no question. But that was only part of being grown up. He’d been physically bigger, and he’d done things that only older ponies did (and a great many of things none of them did)… but he hadn’t done everything. He’d grown, but he hadn’t really grown up.

                    Maybe that was the point. Zecora wasn’t the type to be straightforward… and she’d made that potion with so little hesitation, Rumble had guessed there was some kind of catch.

                    Was it a catch, really?

                    Rumble had been ‘grown up’ for a little bit… and he’d realized that even in that grown up situation, though he’d adapted relatively quickly, he’d still felt lost a great deal of the time. He’d found his way by instinct – and maybe that was the whole key to it. Grown-ups weren’t any different from kids… they were just ponies who’d gotten used to thinking differently. And if Rumble had convinced himself he was different from his classmates, whether through instinct or distaste for stupid games – he wasn’t meant to be ‘older’ than them. He was just more ready for the day that he was grown up.

                    That meant waiting. But, at least in a concrete sense, Rumble was fairly certain there wasn’t really a magic potion to make him grow up.

                    He had grown, certainly… and maybe he’d grown up just a little bit.

                    “Are you guys ready for breakfast? I hope I didn’t make too much.”

                    Flitter opened the door with a tray of pancakes and orange juice, floating them over to the bedside table before turning to the bed’s occupants.

                    “Oh, my…” she said upon seeing the de-grown Rumble and Cloudchaser beside him.

                    “Yeah… uh, sis… it looks like things last night might have been a little… weird.”

                    Flitter blinked and looked at her sister before quietly looking down at the floor.

                    “Cloudchaser, you have a little something, on your, uh…”

                    Cloudchaser raised a hoof to the side of her mouth, her eyes wide in embarrassment. Her hoof dabbed just a tiny bit of wetness. When she pulled it away to examine it, she found a speck of white on her hoof.

                    All three ponies sat in silence for a minute.

                    With a sigh, Cloudchaser wiped her hoof on the remaining blankets.

                    “I told Rumble, uh… that whatever happened last night, I don’t have a problem keeping it to myself, but that it probably won’t happen again anytime soon. Which, I think he gets, right?”

                    Rumble sighed too, but nodded otherwise silently.

                    As much as he didn’t want to, he ‘got’ it.

                    “Stellar. It’s nothing personal, Rumble. Just, uh… maybe when you’re grown up some day, okay?”

                    “Um.”

                    Flitter drew attention to herself in as non-conspiratory a fashion as possible. Both Rumble and Cloudchaser turned, finding the pegasus with one of her forelegs behind her back.

                    “On my way downstairs to make breakfast, I, uh… found this rolled out from under the bed.”

                    With a clink, Flitter set the green bubbling vial down on the bedside table next to the pancakes.

                    Rumble and Cloudchaser stared at it. The liquid inside burbled and glowed in a semi-threatening fashion.

                    “Rumble, is that…” Cloudchaser asked, not sure particularly what to call her speculations on the nearby concoction.

                    Rumble couldn’t bring himself to lie.

                    “…yeah.”

                    All three ponies paused for a moment further.

                    “Well…” Cloudchaser said.

                    “Um…” Flitter accompanied, both of them staring into space at nothing in particular.

                    Rumble hazarded a glance towards both of them before reaching out and grasping the beaker in both hooves.

When you’re grown up some day…

                    “Mind if I take you up on that offer sooner rather than later?” Rumble asked.

                    The twins grinned at him.