Magnum Opus

There was a distressingly large amount of ground to cover between the concert and Octavia's home. It hadn't been a problem on the way to the concert, but she had been wearing clothing at that point. She was decidedly not wearing clothing on the way back, which left her with a dilemma. She could cut through the Everfree, which would leave her safe from further embarrassment and potentially be quicker. But the Everfree Forest wasn't exactly the safest place for a naked pony to wander through alone at night, and there was a high probability of losing her way. Of course, on the other hoof, sticking to the main roads would carry a much higher risk of encountering somepony else – and, while she doubted that anything could happen that could top the debacle at the concert, Octavia decided that she would rather limit the number of ponies who could potentially see her naked. Not that she had time to debate the best course of action. The moans and groans coming from the concert hall had spurred her to make a choice, and she chose the one that let her retain a bare minimum amount of dignity.

Besides, she mused. If she'd stuck to the main roads she wouldn't have come across this peaceful lake in which to wash some of the scent of her sexual fluids from her fur. There was always a chance that Vinyl would still be awake when she got home, and Octavia hoped to limit the potential awkward questions to her nudity. Also the scent was starting to make her feel tingly, which was a very bad sign. Octavia smiled, and moved towards the lake. Finally, something was going right for her tonight.

“Oh! Um. You should probably consider maybe not doing that?”

Fuck.

Octavia covered as much of herself as she could manage, blushing furiously as she turned around to face whatever pony was crazy enough to be out in the Everfree Forest in the middle of the fucking night. Which, somewhat unsurprisingly, turned out to be Fluttershy. It would have been one of those six. Octavia had never really interacted with any of them – aside from that one embarrassing incident at the Grand Galloping Gala several years prior that she pretended had never happened, and the occasional dress designed for her by Rarity – but anyone who had lived in Ponyville long enough came to know that whenever the question “what kind of crazy pony would do that?” came up, the answer was inevitably one of those six.

“That's, um. Not a pool. It's a Sarracenia Giganteas.”

“A what?” Octavia wasn't particularly in the mood.

“Sarracenia Giganteas. Um, commonly known as a deathbottle. It's, um, a giant carnivorous plant. Pretends to be a lake or pool, lures animals into drinking from or bathing in it, then… Um. Snaps shut.” Fluttershy awkwardly averted her gaze, twiddling her thumbs. “Typically eats larger prey, like Manticores, but that's still acid, not water, and it's perfectly happy eating a pony. So, um. Not really a good idea to, um. To skinny dip in there. Sorry.” She winced, wrapping her wings around herself like a shield.

“Oh.”

“Sorry.”

Octavia sighed. “You really don't have to apologize.”

“Sorry,” Fluttershy squeaked, wincing visibly.

“Look, I- Do you have a towel or something I could use to cover up a bit?”

“Oh.” Fluttershy shrugged a pack off of her shoulders, rummaging through it. “Is, um. Is there any particular reason you're taking a bath in the Everfree Forest? Without any clothing or towel or anything? If you don't mind me asking? Sorry.”

“It's a long story. I'd rather not go into it.” Fluttershy thrust a large pink towel out, remaining at the edge of the clearing, hiding behind her long, pink mane. Octavia rolled her eyes, walked over, and gingerly took the towel, quickly wrapping it around herself. “There, you can look now.”

Fluttershy continued to hide behind her mane. “Um.” She coughed, wrinkling her nose. “It, um-”

“Yes. It does have to do with that. Please don't say it.”

“oh” Fluttershy barely squeaked. “If. If you'd like, I could, um. I could help you find your way to a place to, um. To wash yourself. That isn't a deathbottle. Or a giant deathbottle. Or cursed. Or enchanted. Or, um. Otherwise, you know. Unbatheable. If that's alright with you, that is.”

Octavia blushed. “Uh, yeah, okay. And maybe help me find my way home? I don't want to stumble into anything else that might kill me horribly.”

Fluttershy didn't respond, turning and gesturing for Octavia to follow. She led her along a winding, rambling path through the forest, hunched over upon herself in a futile attempt to seem smaller than she was. As it was, she was still at least a good foot taller than Octavia – standing straight, she would almost certainly not even come up to her armpits. Looking at her up close, Octavia could somewhat understand her brief modelling career. She was sort of awkward and lanky, but there was a kind of elegance and grace to her movements. Like she was incredibly uncomfortable living in a body so tall, but at the same time she was very good at it. In spite of her awkward cringing, her movements were fluid. And quick – Octavia almost had to run to keep up with her, if only by sheer virtue of her enormous stride.

“So, um, what exactly brings you here?” Octavia asked, in an attempt to break the awkward silence.

“Oh, I like going for walks in the forest when I can't sleep. It's, um… Actually quite relaxing. If, um. If you know where you're going. And what's dangerous.” Her wings twitched slightly. “Of course, um... Nopony knows everything that lives in the Everfree. So, um... So even if you know your way around, you're never one hundred percent safe.” She quivered, and Octavia decided that it would maybe be a better idea to just sort of tune her out for now. “And, um... Sometimes I like to take baths in the, um... In the Everfree River. It's-”

Octavia didn't really want to know what it was. “Is that why you had a towel with you?”

“Oh, you should never go into the Everfree without at least three towels.”

“I'm not even going to ask why.”

“Oh. Um, here we are.”

The Everfree River was one of the greater Ponyville area's most distinctive landmarks. Stemming from glacial headwaters in the Canter Mountains, it travelled several thousand miles through the Everfree Valley, into the forest, all the way to Baltimare and into the ocean. It was, minus the large stretch in and around the Everfree Forest, one of the most important transportation arteries in the country, even with the large detour to avoid going through the forest itself. It was wide and long, and its waters were crystal clear and inviting, although Octavia was dubious – there were stories that told of unusual properties that the water took on from the strange, unpredictable magics of the Everfree Forest.

“It's safe, right?”

“Oh, yes. At worst you might encounter a stray river serpent.” Octavia raised an eyebrow, and Fluttershy made a vague attempt at a calming gesture. “They're harmless! So long as you don't actively go out of your way to be hostile to them, they'll leave you alone, don't worry.”

Octavia narrowed her eyes. “... right. And the water isn't going to, I don't know, poison me or turn me into a fish or something?”

“No, that's just a rumour.” Fluttershy turned around as Octavia shed her towel. “There's some magic in the water, but nothing active. I bathe in it all the time, if that sets your mind at ease.” The dubious silence Fluttershy received as a response told her that no, it didn't. “Well, um. I don't know the details as to what exactly is going on with the water – you'd have to ask Twilight, or someone else more, um. Magical? But it doesn't do anything to you if you bathe in it. Just makes the water feel different. Warm and sort of thick? It's, um, it's like taking a bath in tomato soup. I guess. Only, um, it doesn't leave you smelling like tomatoes.” She shrugged. “It's better than nothing?”

Octavia sighed. As much as she didn't trust one of those six to give an accurate assessment of whether or not it was safe to bathe in the Everfree River right in the heart of the Everfree Forest, there was one thing Fluttershy was right about; bathing in the heart of the Everfree Forest was her only option right now. And at least the river wasn't likely to turn out to be a giant carnivorous plant. “Fine.”

She slowly waded into the river. Like Fluttershy had said, it felt warm and thick. Nothing like the crystal clear appearance of the river would have led her to believe. More like wading into some kind of gel than water. It was warm, and smelled sweet – Fluttershy's tomato soup comparison wasn't entirely inaccurate. It felt good, warm and tingly and luxurious and-

Octavia blinked. “Fluttershy,” she said, slowly, as the tingling warmth spread through her, filling her up and pushing at the edges of her body more and more and more. “The water wouldn't happen to be some kind of magical aphrodisiac, would it?”

“Oh! Um, sometimes? It depends on a lot of factors, but sometimes-”

“Right! I think I'm clean enough, let's get going back home right now, shall we?” Octavia strode forth, firmly and purposefully getting the fuck out of the river. The water clung to her still naked body, her fur shimmering in what little moonlight managed to filter into the forest through the trees. But at least the tingling was gone – apparently just leaving the river was all it took to turn it back into just normal water. She strode purposefully past the suddenly not quite so tall Fluttershy to where she had left her towel, stooping down to scoop it up and drape it over herself without actually stopping her forward momentum – out of this damned forest.

“That's, um, back the way we came.”

“Right! I knew that!”

Octavia stood, dripping wet and cold and miserable, in the middle of a forest in the middle of the night – which, to look on the bright side, at least went a long way towards counteracting any lingering arousal.

“So...”

“Just... just point me in the right direction.”

It was at least an hour before Octavia got home, cold and miserable and probably sick, an anxious Fluttershy in tow. “Urgh.” She groaned, shivering as she made the final trek up the short garden path leading to the front door of her cottage. “I just want this fucking night to be over with.” She fiddled with the door – “- goddamn it it's locked why did you pick tonight of all fucking nights to actually behave like a responsible homeowner Vinyl I am going to murder you -” – before groaning again and, grumbling all the while, bending over to search for the spare key. “Fucker's here somewhere...”

There was a loud FWOOMP noise, followed by frantic scrabbling sounds.

“Oh! Um. I, um. Sorry. Sorry!”

Octavia sighed, long and low and irritated.

“It's, um. Just that your towel isn't, um, well I guess it's my towel but it isn't really quite, you know, um, long enough? And your tail's sort of pushed it out of the way anyway and the way you're standing right now is... um... oh. My.” There was the sound of fidgeting. “You have a very nice butt?”

Octavia didn't need to turn around to know Fluttershy followed that comment by attempting to hide behind her hair again. She just grunted with irritation and picked up a small ceramic mouse. “I'm standing up now. You can look again without getting an eyeful.” She turned the mouse over and slid open a compartment in the bottom, revealing the spare key. “Fucking-” she fiddled with the doorknob until, after far too long for her tastes, she finally managed to get the damned thing open. She carefully replaced the key in the ceramic mouse before setting it back where she found it – taking extreme care to do so in a way that didn't give Fluttershy another eyeful. “This is where we part ways, I suppose.”

“Oh, um,” Fluttershy twiddled her thumbs, awkwardly averting her gaze. Her wings were still stretched rigidly to their full length behind her. “Actually, I, um. Feel like it wouldn't be a good idea to leave you alone right now. I'd like to, um. To make sure you don't get sick? If that's okay? Um, but I insist, so. Um. I guess it doesn't really matter if it's okay? Sorry.”

Octavia sighed again. “You know what, I don't even care enough to argue right now. Just... get yourself under control and come in. Make some soup or find me a blanket or whatever you want to do that apparently my roommate can't.” She turned and strode into her cottage-

“C'mon, bitch! Harder! We're not playing fucking Jenga here, you're fucking my ass with a giant-ass strap-on and I can barely even fucking feel it! HARDER!”

“You want hard? We've got three hours before my roommate gets back from 'er concert, and by the time they're up I'll have fuckin' ravaged your ass so bad you're gonna be flying crooked for a fucking month!”

“Slut!”

“Says the bitch who fucked her way onto the Wonderbolts!”

“Less talking and more fucking!”

Octavia blushed. “Oh, um...” A hot ache blossomed deep in her core as she took in the spectacle before her. Vinyl was naked, save for the black strap-on she was using to fuck a blue-green pegasus mare in the ass. Her face flushed – she could feel it spreading, a tingling heat, like her sinuses were heavily congested, only not as thoroughly unpleasant. “Right. Okay.” She coughed, and then when the fucking didn't cease, she coughed again, louder. Though still not loud enough – Vinyl continued to rail her latest one-night stand doggy-style on the couch. “Okay, fuck it. Vinyl fucking Scratch, stop that this instant or find yourself a new place to live!”

That was enough to get through to her. Vinyl slipped mid-thrust, flailing around and falling backwards in a panic. The teal pegasus she was fucking got flung backwards right along with her, landing face-up on her back on top of Vinyl. “Ow, fuckin' – watch the goddamn horn, fuck! Ow!”

It took a few more minutes of awkward shuffling for Vinyl and her present fuckbuddy to properly separate themselves and get into a marginally less undignified position. The pegasus rubbed the back of her head where she had collided with Vinyl's horn, while Vinyl awkwardly rubbed at her face and abdomen where her partner's wings had collided with her. Octavia stood before the two, hands firmly on her hips, glaring sternly and furiously ignoring how turned on she was at that moment. “Vinyl.”

“Yeah, uh, hi Tavs.”

“So, hey, do you happen to remember the little agreement you signed waaaaaay back when you first started renting a room in my cottage? Do you remember the terms you agreed to?”

“Uh, yeah.”

“And what, pray tell, were those terms?”

Vinyl sheepishly averted her gaze, blushing. “Uh. No parties, need to keep the volume down after ten, gotta clean up after myself, gotta contribute to cooking and cleaning and shit, uh-”

“Vinyl.”

“No casual sex outside of my room?”

“Yes. And what exactly did I just catch you doing?”

“Having casual sex outside of my room?”

“Yes.”

“Sorry.”

Octavia rubbed her temples. “Do you know what, on any other day I'd be pissed off, but after the night I've had I'm just content to ask you to please avoid doing that in the future?”

“Yeah, that seems fair.” Vinyl stretched, the foot-long strap-on awkwardly flapping about.

“And take that fucking thing off please god damn.”

“Yeah, that... also seems fair.” She obediently began to slip the strap-on off while continuing the conversation. “So, uh, this is Lightning Dust. Say hi, Dusty.”

Dust waved. “'sup. I'm gonna go get some coffee. Anyone want some?”

Fluttershy awkwardly raised a hand.

“Cool. Hey, couldja grab my pants on your way? They're over on the back of the couch. Oh, how's Dash doing? Haven't had time to chat with her recently.”

“Oh, um, okay.” The two mares went into the kitchen, one after the other – the open plan of the cottage left Octavia and Vinyl with little actual privacy, but at that point it hardly mattered to either mare.

“So how was the concert?”

“It's a long story.”

“Right. Got anything to do with the whole complete lack of any clothing aside from the towel?”

“A very long story.”

Vinyl shrugged. “Shit, man, I got nowhere to be.”

“Fair enough. Still, it's... a really long story.” Octavia coughed awkwardly. “It's kind of your fault? But it's also kind of my fault. Mostly mine, really.”

“Uh huh.” Vinyl raised an eyebrow. “Like, what, you saw my pics and got so horny you had to strip down and fuck everyone in the concert hall one by one?”

“It's, uh, a really, really long story.”

Vinyl's eyes widened. “Wait, hold on, that was a joke. I didn't actually guess right, did I?”

“Well,” Octavia's blush deepened, “you're definitely close.” She gestured. “Come on, you're probably gonna want to sit down for this.”

“Bullshit.”

“I'm not making it up, I swear.”

“Yeah, sure you're not.” Vinyl rolled her eyes. “If you're gonna bullshit me, at least come up with bullshit that could actually, you know, happen? In real life?”

“It's a little far-fetched, yeah.”

“I, um. I've seen more unbelievable things happen.”

“You two stay outta this.”

“Look, that's what happened.” Octavia blushed – a fact that had been something of a constant over the course of this night. “You don't have to believe me if you don't want to. Won't make it any less what happened.”

“Yeah sure. I guess I'm gonna see you in the paper tomorrow morning, then?”

“Actually-”

“I was being sarcastic, Tavs.”

“I know, but-”

“What I meant was that you're bullshitting me.”

“Why on earth would I bullshit you about this, Vinyl? I mean, you know me, right? If this didn't happen, would I really tell you that it did?”

Vinyl glowered dubiously. “Yes.”

“Okay, now you're bullshitting me.”

“Well, it's a little out of character, but it's less bullshit than 'I turn into a fifty foot tall dickmare when I get horny and my cum turns other ponies into fifty foot tall dickmares!' That shit is totally something you'd make up to make fun of me.” She threw her arms in the air in exasperation. “And anyway! Just 'cuz you hate fun doesn't mean you wouldn't make up that kinda shit! If anything it just makes it more bullshit!”

“Well, there's an easy solution.” Lightning Dust took a swig of her coffee. “Like, you said you only grew so huge because you held back and you're not gonna do that any more, right? So just jerk it a bit, get a lil' big, cum, get small again.” She shrugged, leaning back in her chair. “Worst-case scenario nothin' happens, right?”

“I feel like there are a lot of significantly worse potential worst-case scenarios than that. But...” She slid her chair backward, shrugging off the towel. “I suppose that if I don't, then I might as well just be admitting that it didn't happen.” Though, she mused, would that really be so bad? Let Vinyl not believe her tonight, it's not like it mattered all that much in the grand scheme of things. Eventually she would get this thing under control. Genuinely under control, not the blind repression that made her inevitable failures of willpower that much worse – and Vinyl couldn't avoid noticing that specific aspect of Octavia's biology forever once she developed a healthy sex life.

But then, by that line of logic, she was going to have to develop a healthy sex life and get her problem under control first. And fuck, what better time to get a start on that than now?

Vinyl stared, dumbfounded. “I, uh. Okay. Not gonna object to seeing you jamming the clam either way.”

“I am!”

“No one invited you, Fluttershy. Why are you even still here?” Fluttershy responded by hiding behind her hair, and Vinyl sighed. “Whatever. Just... get goin' when you're ready, Tavytav Mac Tavtav.”

“Your pet names for me are getting ridiculous, Vinyl,” Octavia muttered, turning her attention to herself. Her hands hovered over her body – one awkwardly pawed at an orange-sized breast, the other rubbed her midriff. It wasn't like she'd never done this before. She'd masturbated a whole two times in her life. Sure, both times she'd been relying entirely on instinct and had been barely in control of her actions, but it shouldn't be too difficult to recreate the motions.

Well, aside from the lack of a cock. Usually (and by 'usually' she meant 'both times in her life she'd lost control of her libido and masturbated uncontrollably'), by the time she'd reached the point where she was actively masturbating, she had a very large hunk of flesh that was much easier to deal with than her cunt was. She lowered her rubbing from her navel to the actual thing, touching it. It was moist, but she wasn't quite sure where to go from here.

Perhaps she was going about it from the wrong angle. She'd never had to play with herself to get horny before. She was surrounded by beautiful mares, so fantasizing shouldn't be too difficult. Especially considering that only one of them was actually wearing a substantial amount of clothing. Lightning Dust was still completely topless, showing off her athletic body. Her toned musculature was clearly visible below her fur, the result of years of training. In spite of that, she had ample enough feminine appeal. Nothing compared to Vinyl, but certainly more than Octavia usually had when she wasn't really going. Her tight jeans clung to her expansive hips and thick, luscious thighs, wider than her shoulders. Probably not very aerodynamic, but impressive nonetheless. The position she was in left Octavia unable to actually see her ass, but her earlier glimpse had been more than enough to picture it clearly in her mind. Soft and expansive, jiggling like the cliche bowl-of-jello comparison in time with Vinyl's rough thrusting, in and out and in and out and in and oh fuck there it was. The warm tingle returned, starting deep in her chest and spreading its way outward. She groaned, biting her lower lip gently and forcing one eye open to continue gazing at Lightning Dust's hips – clearly she was on the right track, fantasizing about them.

Dust raised an eyebrow, smirking seductively as she followed the line of Octavia's vision. “Like what ya' see?” She licked her lips, and reached her way down. Her hands gently slid down her waist to her rocking hips, sliding around and grasping at the button of her jeans. “Wanna get a better look?”

Octavia groaned again, deep and throaty, and gave a more enthusiastic squeeze to a grapefruit-sized breast.

“I'll take that as a yes, then.” Dust slowly undid her jeans, rocking her hips back and forth sensually as they inched their way down her thick thighs. She strutted her way around the table seductively, making her way in front of Octavia. She turned, facing away from the shorter pony, and gave her ass a gentle smack, sending waves of motion through its ample padding. “It's all yours, cutie. Have fun~”

“Gnnnnnn,” Octavia groaned. Slowly, her quivering hands reached their way forward, one placing itself on each of Dust's cutie marks. She squeezed firmly, fingers and palms sinking slowly into supple flesh. There was just so much of it, soft and warm and big and full and big big bigger more FUCK-

“Hey, don't be afraid to get rough. I'm not made of glass, it's not gonna break if you get really enthusiastic. Hell,” she purred, “if anything I'd prefer i-woah!” Octavia shoved her face forward and downwards, burying her snout deep between Dust's ample cheeks. “Hell fuckin' yeah! That's more like it, bitch!”

Octavia inhaled deeply. Fuck, that was good. She let the musky, warm scent of raw sex left over from Vinyl's earlier fun envelop her, reaching deep into to her core and spreading like fire. So hot, so fucking hot and full like she was going to fucking explode!

“GnnnnnnffffuuuuuUUUUUUUCKKKKKK!”

Dust yelped as Octavia lurched forward, knocking her off her feet and spreading her ass wider. She plummeted forward, landing bent over the table, ass in the air. “Woah, okay, little too enthusiastic. Definitely movin' in the right direction, though! Wanna grab Vinyl's strap-on, have a little anal action?”

“Um.”

“Holy shit.”

“I, um, don't think she's going to need it. The strap-on, that is.”

“What the fuck is that supposed to mean?” Dust turned her head to get a better look at what was going on -

“Oh.”

Octavia was standing, chair toppled and kicked aside. Though standing wasn't an entirely accurate term – towered was more like it. She was huge, at least seven feet tall. Her breasts were enormous, each one twice the size of her head, capped with thumb-sized dusky grey nipples that glistened with droplets of sweat and milk. Her hips easily dwarfed Dust's, and her ample ass quivered deliciously along with all the rest of her, shaking with barely contained arousal.

But what really drew Dust's attention was the tree trunk of a cock that swung heavily between Octavia's legs. Its shaft was easily the size of Lightning Dust's torso, thick and veiny and quivering, precum drooling from the slit. At its base rested two enormous testicles that pulsed visibly with their copious load. And the scent, musky and hot and overwhelmingly virile, sent shivers up and down Dust's spine. Octavia had a firm grasp on the monolithic cock, gently milking more and more pre from it, the thick, salty liquid drooling all over Dust's prone body.

“Uh. Okay, so I was wrong.” Vinyl swallowed. “You absolutely do turn into a giant sexy shemare when you get horny. Who fuckin' knew?”

Fluttershy wiped away a stray strand of drool.

“So, uh, you can stop now, Octopussy.”

“Uh. Yeah.” Octavia quivered again, surging another foot taller in one jerky lurch. “I think I might have passed the point of no return.”

“what the fuck do you mean point of no return.”

Octavia surged to nine feet. “I mean that I should probably get out of here before I'm too big to fit through the door, Vinyl.” She bit her lip again, groaning lewdly as she stretched another foot. “I guess doing it intentionally – fuck – makes it go faster.” Another growth spurt left her hunched over, no longer quite able to stand upright without bumping her head on the ceiling. A spurt of translucent fluid arced through the air, splattering on Fluttershy's face. She grimaced, gingerly wiping some of it off.

“Maybe you should stop jerking off, then! Fuckin' Celestia's sake-”

“No fuck that keep going this is hot!” Lightning Dust squirmed on the table, hands buried in her crotch.

“That's just the precum talking.” Another surge left Octavia at twelve feet and counting. “Right, no more talking, I'm gonna get out of here before I can't get out of here.” Octavia wrenched her still swelling form around as best as she could in the very rapidly dwindling space before an abrupt surge of growth, much larger than any previous one, sent her stumbling and falling to the ground, trapped on her back in between the foyer and kitchen. The following surge left the now twenty foot mare's hips thoroughly wedged. “Fuck.”

Dust groaned. “Shit, that's probably bad.” She squirmed, hands firmly wrapped around her own newly-sprouted shaft, gently pumping it.

“Yeah, no shit. Hold on, Tavi, lemme just try and get you outta there.” Vinyl worked her way around to Octavia's thigh, and began to push against it. “C'mon, you fucker, get outta there.”

“Oh shit Vinyl you're making it worse.”

“Shush, almost got it fucking hell!” Vinyl punched Octavia's plush hips in frustration. “Okay, new plan, I'm gonna try pullin' you out. Dusty, get your hands off your cock and help.”

“What no! Bad idea! Very bad ideaaaaaaaaah!” Octavia's train of thought was interrupted by Vinyl crawling on top of an ominously rumbling testicle. She was quickly joined by a deleriously horny Lightning Dust, crawling their way along Octavia's quivering shaft. “Ooooooohfuck~”

Vinyl ignored Octavia, monofocused on pushing her way out of the kitchen, through the increasingly small gap left by Octavia's steadily growing form. There was just barely enough space in between the walls and Octavia's cock for Vinyl and Lightning Dust to immediately get themselves wedged tightly. “Fuckin' – of fucking course. C'mon!” Vinyl pressed and squeezed her naked body against the throbbing, growing shaft. Slowly but surely, lubricated by gallons of precum, she worked her way through the gap. Shoulders pushed through into the foyer, followed by a pop as her ample bosom broke free. From there it was easy going until her hips. “Gah! Curse my voluptuousness! And Dust, stop growing, you're making this way harder than it needs to be!”

Dust groaned in response. She was hardly even trying to push through, thrusting and grinding her member against Octavia's. Hers was barely a fraction of the size of Octavia's, nowhere near the point of catching up to the gargantuan musician's orchestra section, but still enormous on her frame. Her growing frame. Where Octavia grew in rapid, enormous jolts of size, Dust's growth was slower and steadier. Breasts fuller, legs longer, muscles larger, and her already wide hips, thick thighs and plush ass wider, thicker, and plusher. “Mnnnnnnnng fuckkkkkkkkkkkkk feels soooooo goooooooooood.”

“Really bad time to be feeling good, Dusty!” Vinyl firmly grasped at Octavia's slick meat as best she could, drawing forth ominous groans from the gigantic mare. Her body glistened, soaked in Octavia's precum from head to toe. It tingled intensely, and a deep, primal need built in her gut, pushing behind her crotch. “Oh, no, not gonna fall for that – gnnnnnnnfuck.” There was a weight, hanging heavy between her legs and pressing firmly against Octavia's flesh, that Vinyl pointedly did her best to ignore.

“Bigger!”

“No! No bigger! Bad Dusty!” Vinyl shifted her grip from Octavia's cock to the fur on her belly in an attempt to get a more solid grip on something not quite so thoroughly lubricated. She pulled, her new alabaster cock frotting Octavia's, drawing a quiet moan from Vinyl. “Fuck, this was a bad ideaaaaaaaaaaahn~” There was a wet pop, and Vinyl found herself flung across the foyer and into the living room, upside down against the far wall, her body bent over itself and her prodigious cock poking her in the eye. “Fuck.”

“Vinyyyyyyyyyl, I'm getting close~” Octavia writhed, hips thrusting as best as they could in spite of being thoroughly wedged – and getting more and more tightly wedged by the second. There was an ominous creaking groan from the walls, squeezing deeply into Octavia's thick midsection, ample flesh oozing and bulging around it. “I fuuuuuuck think our house is kind of a gnnnnnn write-off at this poiiiiiiint.” Cracks spread across the walls in angular spider web patterns, the whole house vibrating and making crunching noises of gradual structural failure in the face of the titanic mare.

“Okay! New plan, we get you off as quickly as possible before I have to find a new place to live again.” Vinyl groaned. “And me and Dusty I guess. At least Fluttershy's still normal sized, right?”

“Mnnnnnnn, well, she did get a face-full of pre earlier, but it wasn't a lot so maybe she FUUUUUUUUCK!”

“Fuck? What fuck? Fuck is what? Is it a bad fuck or a good fuck which I guess is also a bad fuck at this point, let's be real.”

Octavia's back arched as much as it had room to, her tongue lolling out of her mouth as her cock pulsed audibly. “Noooooope, Fluttershy's growin' too! And she's ooooooh fuck she's got her cock in between my balls and she's rubbing fuckkkkkkkkkkkk!”

“So she's ballfuckin' you?”

“Now is not the time for wit Vinyl Scratch!” There was a titanic rumbling, the walls to either side of Octavia beginning to give way in earnest. The whole building shook, dust and hunks of the ceiling raining on all four ponies. “I – fuck it, I'm cumming!”

Vinyl didn't get to experience much of Octavia's orgasm – she was directly in the line of fire for the first eruption of hot white cum. Immediately, what little restraint she had was washed away by need. She had always been so much more uninhibited than Octavia, and all it took was a slight adjustment to her position – not even an intentional one – for her cock to pop its way into her mouth and for all pretences of holding back to fall to the wayside in favour of vigorously fucking her own face. Gallon after gallon of cum surged forth, thoroughly coating the entire first floor of the house until every last millimetre had been covered by thick white spunk. With the final cataclysmic collapse of the walls that separated the kitchen from the rest of the house, even Fluttershy wasn't safe. She groaned, continuing to mindlessly thrust against Octavia's convulsing ballsack, the boulder-sized testicles pulling in against Octavia's body too tightly for there to be a cleft for her to properly fuck. Not that she appeared to mind. Dust remained pinned, wedged between Octavia's convulsing redwood and what remained of the walls, frotting and revelling in the impossibly vast output. Time seemed to blur together as the four mares fucked and came and grew, the free space in the house dwindling rapidly.

Ponyville slept. It was that time of night, when even the night owls had turned off the lights and gone to bed, but the early birds had not yet finished with their own slumber. The world was still and, aside from the soothing chirping of nocturnal insects and the gentle purr of the evening breeze, silent.

A silence that didn't extend to the edge of the town.

The outskirts of Ponyville were dotted with scenic cottages. Many of them were home to Sweet Apple Acres' various farmhands, the one closest to the Everfree belonged to Fluttershy, and nestled comfortably somewhere in between the two was a simple, two-floor affair. It was simple and tasteful, wood walls and a thatched roof, with a brick chimney that, in the winter, let out a gentle streak of dull grey smoke.

Tonight, it let out a thick white sludge, a cocktail of sexual fluids from four different ponies. The walls bulged out unnaturally, and spiderweb cracks darted their way around the creaking windows. The whole thing creaked and groaned, rumbling ominously before the roof burst open entirely, an enormous cock bursting free and spraying cum into the heavens. The dark yellow shaft was quickly joined by equally huge beige and dark blue pillars of flesh, each one gushing immense volumes of semen. Cum overflowed the now open roof of the house, cascading down the sides and rushing across the ground into Ponyville.

The rest of the house burst open moments later, foot after foot of yellow-furred flesh across the hilly outskirts of town. Lightning Dust wasted no time in shoving her cock in between Fluttershy's building-sized tits and thrusting away with wild abandon, each orb close to dwarfing the hundred foot tall pegasus. Octavia found herself shunted off to the side, dazed and confused and still cumming. “Well,” she said to Vinyl, who was busy sucking herself off, her hips thrusting wildly. Thick streams of gooey cum oozed from the corners of her mouth, her output far outpacing her growth or her ability to swallow it. “Tonight has definitely been... interesting.”

“Mrf.”

“Yes, I can tell you're busy but if I can cum and talk at the same time so can you.” She firmly grasped her shaft, giving it a solid pump, coaxing a fresh orgasm out. “Honestly, you need to work on your manners, Vinyl.”

She gazed around, taking in her surroundings. Her home was, of course, completely destroyed, but that was easily fixed. And an important lesson had been learned for the future; no sex inside. Her gaze trailed along, following the rushing river of cum on its way into Ponyville. Today was going to be a very interesting day, she mused. She turned her attentions in the other direction, towards the Everfree – and beyond, Canterlot.

That Bonbon was visible all the way from Ponyville should really have surprised Octavia. She was easily a match for Canterlot Mountain itself in terms of raw size, her drooling cock bigger than Octavia's entire body. The two mares' gazes met, and Bonbon gave a friendly wave before cupping her hands to her mouth. “Hey, thanks for letting me dom you earlier! It was a nice change of pace from the routine!”

Octavia blushed. “Uh, you're welcome?” she shouted, hoping her voice was loud enough to carry across the significant distance between the two mares.

“We should really do this again sometime! Now, if you'll excuse me, I'm gonna go contaminate a major water supply or two~”

“Well then.” Octavia sighed. It was all she could do, really. “Looks like it's going to be a very long day.” She hefted herself to her feet, drawing a quizzical look from Vinyl. “Well, some mares might be content blowing themselves,” Octavia stated snootily, giving one of her tits a firm squeeze, “but I'm far from content to just sit here and fuck like some kind of animal.”

“Mrf?”

“Well, Bonbon's got quite the head start on me, so I've got a lot of growing to do.”She punctuated her statement with another growth spurt, accompanied by a sensual moan. “Mnnnnn, but I'm sure I'll be able to catch up in no time.”

Octavia leaned down and hefted the now smaller Vinyl up over her shoulder, drawing a panicked “Mrf?!” from her former roomate.

“You know what they say; When in Ponyville, go on gigantic sex-crazed rampages across Equestria like the Ponies do. I hear Cloudsdale is nice this time of year. What do you think?”