Pound Cakes

by AzureDreamer

Rating: mature
Tags: Anthro, Cake Twins, My Little Pony: Friendship is Magic, Romance, Porn, Sex, Fetish
Length: 9194

Pumpkin Cake uses magic to make Pound into a busty futa and then they do an incest.

ALL CHARACTERS INVOLVED IN SEXUAL SITUATIONS ARE OF THE AGE OF CONSENT OR OLDER.

Pound and Pumpkin Cake have always been incredibly close. It isn't just that they're twins; Their birthday being mere days after the cut-off date for signing up for school left them almost a full year older than any of their classmates. While that might not seem like a lot, a year can make a very big difference, and in the case of the Cake twins, that difference stuck; the two are closer to each other than to anypony else. So it was only natural that, when they started experimenting with their sexuality, they did it with each other. Now, years later, they are in a happy and loving (if incestuous) relationship.

But all is not well. Pumpkin has always been the bigger sibling, so it was only natural that she was always the top and Pound was always the bottom. But Pound has grown tired of always being on the receiving end - and just a little bit resentful of his significantly more well-endowed sister. Pumpkin is not oblivious to her brother's feelings, and frankly it's not fun if Pound isn't enjoying himself.

So Pumpkin has come up with a plan. Pound is gonna get a taste of what it's like to be on top. A much bigger taste than either of them bargained for.

WARNING! CONTAINS ANTHROS, FUTA, TWINCEST, HYPER, COCK EXPANSION, BREAST EXPANSION, MISCELLANEOUS OTHER TYPES OF EXPANSION, MALE-ON FUTA, DUDES WITH BOOBS, AND PROBABLY A BUNCH OF OTHER WEIRD STUFF

cover art by Suirano, edited by Khylo.

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Published 2019-05-21 16:20:02 UTC
Last updated 2022-11-29 01:01:15 UTC

Little Sister

Pumpkin Cake was never good at subtlety. That was Pound's job, usually, and he was quite good at it. If anything, he was a bit too good at it. Whenever there was something wrong, he never said anything. Just kept it to himself, bottled up.

"I've got a surprise for you~" Pound nodded absentmindedly and let out a non-committal grunt. That was normal. Pound was a stallion of few words, and had a habit of not paying enough attention to his surroundings. Pumpkin could take her blouse off and shove his face into her ample cleavage and he would mostly be annoyed that she interrupted his reading. “It's a sexy surprise~”

“Actually, I'm kinda not in the mood tonight, sis.” He closed his book and sighed. “I've got a lot of homework to do and I don't want my grades to slip again because we spent all the time we should have been studying having sex.”

That was a bad sign. Pumpkin knew her brother better than anyone else – even their parents didn't know them as well as they knew each other. Of course, that was a necessity more than anything else; it wouldn't do to have their parents know that their children were in an incestuous relationship, so they didn't. “Oh, come on, I went out and bought XXXXXXXXL condoms and everything.” Bringing up homework didn’t really mean that he was concerned about his grades. He always got good grades anyway, certainly better than hers.

“We're seniors, Pumpkin. Getting good grades is more important now than it's ever been.” If he were genuinely not in the mood, he wouldn't have responded to her at all. “And anyway, that's way fewer Xes than usual. You know if you use a condom that's too small it might break, right? I don’t wanna hafta spend the afternoon with a butt full of torn latex again.”

Sarcasm. Anypony else would assume it was just a snide dismissal of her overtures and that the actual sentiment was genuine. But Pumpkin knew him well better than that. He was trying to hide it by playing to her ego, but he was pretty clearly taking shots at her size. “And? It's not like you're gonna get pregnant, and it's not like either of us have any STDs we need to worry about spreading.” She frowned and crossed her arms, clicking her tongue disapprovingly. “Unless you've been cheating on me? Hm? Izzat it? You've been fuckin' someone on the side and leaving your dear sister in the dark?”

Pound rolled his eyes. “No, I haven't. You remain the light of my life, my one and only, for reasons that I can't fathom because you're a pain in my ass.”

“Literally.”

There it was. You could barely call it a grunt, but that was the only word Pumpkin could think of. A very slightly more forceful than usual exhalation of air that was just barely not a disgruntled mutter. That confirmed her suspicions. Pound was jealous.

“Fine, fine. I know when I'm not wanted.” Pumpkin turned her nose up and snapped around, giving her brother a good smack in the face with her tail. “My magnum dong and I will be taking our business elsewhere.”

Pound frowned. “Hey, seriously, I'm not seeing anypony else. Don't you go revenge-fucking some random guy.”

“Who would I revenge-fuck, babe?” She gave her tail a flick, giving her brother another good thwap with it that was clearly entirely unintentional. “I'm just horny as fuck, and since someone's decided to be a huge fucking stick in the mud I'm gonna have to jerk it instead. Which means I need to go find some privacy, unless somepony wants to watch me masturbate like a fucking weirdo.”

She left before Pound could respond. If Pound was too good at subtlety, Pumpkin was almost incapable of it. If she stayed any longer, he would notice that she'd noticed what was up. And she didn't want to have that conversation right now. And also she was horny and wanted to jerk off without disturbing his studies. “Asshole,” she muttered to herself as she tromped her way down the stairs into the main part of Sugarcube Corner. She'd always fucking hated that. Living in a bakery sounded nice on paper, but she had spent literally her entire life and especially her teenage years almost completely lacking basic privacy. A full half of her home was a public space. The upper floors, the part that wasn't a part of the bakery, was only very slightly better. It was spacious enough, but she had to share it with four other ponies. Even her own bedroom was just as much Pound's as it was hers. There were very few places she could go to be alone.

And Pumpkin, more than anyone else in the Cake household, needed her privacy.

“Hey, Pumpkin! Dinner's gonna be at five!” It didn't help that one of those four other Ponies was Pinkie Pie. Pumpkin tried not to think back on all the times Pinkie had barged in on her dealing with the issues inherent with her body. Certainly more than anyone else except Pound, who literally shared a bedroom with her.

“'m goin' out.”

Pinkie remained seemingly oblivious to Pumpkin's bad mood. Pumpkin knew her better than to buy into that, of course. “That's fine! Just make sure you're home by dinner 'cause I'm making Hayburgers and it'd suck if you missed them again!” Every word that spewed from Pinkie's mouth sent rippling motions through her body. She was a very heavyset mare in all the places that looked good when you're heavyset.‘Thicc’ was the term, she believed, but she’d always hated that word.

Pinkie had been the subject of many of Pumpkin's adolescent fantasies. Less so now, not because she had gotten less attractive over the years, but because the reality of the age difference between the two had set in. Pumpkin was nineteen, Pinkie was already past forty. What little hopes she'd had of actually tapping that had been dashed a year or so ago – she had been gossiping about the boys in her class and, when she'd asked Pinkie her opinion, the older mare had responded that they were all far too young for her. And Pumpkin was only a year older at most than any of them, so any idle fantasies of making those early sexual fantasies a reality were thoroughly dead and buried.

“Yeah, sure. Tell Pound he's a dick.” Pinkie nodded wordlessly. Sometimes Pumpkin thought she was the only pony in her entire family who understood that expecting the twins to share a room well into their teenage years had been a poor decision.

It had certainly played a part in the formation of their relationship.

The twins had an early fall birthday. Just early enough to have reached the minimum age for signing up for school a week after the deadline. They'd gotten into school the next year, but they were a full year older than any of their peers. A much bigger difference when you're that age, and that difference had stuck over the years. Most of their friends outside of each other were, to be brutally honest, customers. Pinkie Pie's friends, the crusaders and their friends, all much easier to relate to than their classmates and all significantly older than them.

It hadn't led immediately to incest, of course. They were just good friends, even once they reached the age where they realized sex was a thing. Puberty had hit them both fairly hard, especially Pumpkin. One of the realities of her body was that she had a much stronger libido than normal ponies.

It was the lack of privacy, really, that had pushed things over the edge. One night, when Pound had been out at junior fliers camp, Pumpkin had decided to release some stress in their room rather than locking herself in the bathroom for a few hours. Pound had come home early, and the rest was history.

Which was also probably why Pound had been in such a mood lately, Pumpkin figured. She'd always been the bigger sibling, physically. Not that Pound was small – a footlong member was hardly anything to laugh at.

It was just that Pumpkin's was two foot six, the last time she'd checked. It might have grown since then, it had been a while.

It was really only natural, then, that Pumpkin was the top. She was taller, she had a much more intense libido, and she had a bigger cock. Pound didn't mind. Or hadn't, at least. Until recently, he'd been more than happy to be the recipient of gallons of his sister's copious frustrations every now and then. For years now. She couldn't really fault him for getting sick of it. She knew that if she'd spent six years constantly being on the receiving end she'd have lost her patience much sooner than he had.

And, really, if both parties weren't having fun, it wasn't very good sex, was it?

Pumpkin paused at the door. “Hey, Pinkie? Can I ask you a question?”

Pinkie smiled, the same ridiculously wide beaming grin that she almost always wore. “Pft, you don't need to ask my permission, silly!”

Pumpkin fidgeted, shifting her weight from one leg to the other rhythmically, her wide hips rocking back and forth with the nervous motion. “It's, uh, kind of a private question.”

“I have some break time comin' up.” She smiled again, much more down to earth. Less of a Pinkie Pie Smile and more of a Big Sister Reassuring Her Little Sister She'd Keep Her Questions About Sex Private Smile. “C'mon, let's go to my room and we can talk about whatever.”

“So, uh, there's this guy in school-”

“Are you thinking about cheating on Pound?”

That caught Pumpkin off guard, but it probably shouldn't have. Pinkie always seemed to know everything about everypony. Still, that didn't stop that sinking feeling, like the ground under her heart had collapsed, leaving it in free-fall. “Oh god, please don't tell anyone,” she begged, finding herself suddenly on the verge of tears. “I'm sorry, I know it's bad and wrong but-”

“Well, yeah it's bad! You shouldn't be talking to me about some guy you have a crush on when you've already got a coltfriend!” Pinkie crossed her arms and frowned disapprovingly. “You should really be talking with Pound about this, not me!”

Pumpkin swallowed heavily. The terror of her secret being revealed to everyone still enveloped her. “So... you're not mad?”

“Yes I am!”

“No, not about that.” She rubbed her temples. Really, she shouldn't have been surprised by anything about this conversation, but Pinkie had a unique ability to catch ponies off guard at every turn. “I mean... you're not mad at me about, you know...”

Pinkie's demeanour shifted instantly, like a jump cut – one moment she was leaning down and frowning with her hands on her hips, like a parent chastising a child for stealing cookies and spoiling their dinner. The next she gave Pumpkin a big, soft, gentle hug. “Of course not. Love is love, that's the important thing. And anyway it's not like I'm a stranger to incest.” Pumpkin had met all three of Pinkie Pie's sisters. Again, she shouldn't have been surprised that they'd been together, but she was. “I'm probably not the best pony to ask for advice on this subject, though.

Pumpkin felt tense. She knew that she was safe. If there was anypony who could keep a secret, the ones that really needed keeping, it was Pinkie Pie. But Pumpkin couldn't help but worry. Here her greatest fear was being realized right before her eyes. Someone knew. “You promise you won't tell anyone?”

“Cross my heart and hope to fly, stick a cupcake in my eye. Your secret's safe with me.”

That was a weight off of Pumpkin's shoulders, but that tension remained. “What about my, uh, problem. You said you're not the person to ask for advice?”

Pinkie Pie sat on the edge of her bed, gently patting beside her in an obvious invitation for Pumpkin to join her. She did so, leaning against Pinkie Pie. She felt safe here. “My relationship with my sisters isn't really the same as yours with Pound. We're just regular fuckbuddies, not anything serious.” She ruffled Pumpkin's hair gently. “'sides, none of us have cocks. If it's a bedroom problem – and it probably is, or else you wouldn't have wanted to talk to me in private! – then I can't really help you with it because I don't have the right bits in my pants~”

“Oh.” Pumpkin felt her heart drop again. “Well, I mean, it's an intimate problem, but it's not a bedroom problem. Sort of. It's just that...” Pinkie made a silent gesture with her head for Pumpkin to continue. “I'm... I'm bigger. Just sort of in general, but especially, um. Below the belt, you know? And I'm pretty much always the one who's giving, so-”

“So you think Pound might be a little jealous?”

“No. I know he's jealous.”

“Mhm.” Pinkie nodded. “Well, like I said, I've never really been in the kind of relationship you two have. Buuuuuuuuut I do know somepony who is. Hup!” Pinkie hopped off of the bed, gesturing for Pumpkin to follow. “I'm gonna give you an address. Don't worry about telling them about Pound, they'll keep it a secret almost better than me! Just tell them I sent you and they'll know why you're there.”

“You're sure?”

“Trust me,” Pinkie replied, smirking knowingly and handing a small scrap of paper to Pumpkin, “no one knows what you're going through better than them.”

Pumpkin was anxious. She couldn't help but be anxious. Anypony would be anxious if they were about to get advice about their incestuous relationship from random strangers.

Not that she didn't know whose home she was at. Sugarcube Corner was the biggest social hub in Ponyville and she grew up in it. She knew everypony in town. This house belonged to Flitter and Cloudchaser. Twins, a few years younger than Pinkie and her friends.

Certainly not the kind of ponies she expected to be going to for relationship advice. Not the type she'd expected to be going to for any kind of advice ever, really. They had nothing in common – aside from being twins. But if Pinkie said they knew what they were talking about, Pumpkin had every reason to believe her. She knocked on the door, and was answered by a muffled shout of “come in!”

Seeing the two going at it on the couch probably should have surprised her more than it did.

“Mnnnn, we'll be with you in a second~” That was Cloudchaser. They were identical twins, unlike the cakes, but it was easy to tell them apart just by looking at their manestyles. Flitter typically kept her mane neat and tidy, straight and tied up with a pale pink bow that was, at the moment, discarded over the side of the couch, her mane wild and unkempt and streaked with cum. Cloudchaser's mane was neater, if only because it was mostly hair gel – it had to be, in order to keep it in its ridiculous style. It also helped that she was currently the one doing the penetrating, railing her sister from behind.

“I – mngggg fuck right there keep doing that – I still say that we could have just told her, you know.”

“This way's more fun.” She turned to grin at Pumpkin. “Wanna join in? Flitter's pretty good at suckin' cock. I'll bet she could take all of yours~”

“Uh, no thanks.” Pumpkin resisted the urge to cringe, and awkwardly attempted to smooth her skirt, which was doing a very inadequate job of concealing her substantial bulge.

“Pft, suit yourself, but your turn doesn't come 'til we do, so you might as well join in.”

“You two are like forty, isn't that a little old to be propositioning high school students?”

“Hey!” Flitter shouted. “We're – mnnnn~ – we're thirty six and yoooooou're not gonna be getting any help if you keep being rude!”

Pumpkin tried not to breathe too much. The whole room stank of sex. Wet slapping noises echoed throughout the building as Cloudchaser pounded her sister's ass, drawing increasingly loud moans from the more feminine of the two. It was definitely arousing, if also horribly uncomfortable. Pumpkin wanted to get this over with as fast as possible so she could just go home and take care of herself. Her cock strained against her skirt – which was supposed to have a concealment enchantment on it, but the very noticeable bulge in her skirt suggested that she was never going to be buying this particular brand again. Her cantaloupe-sized balls ached, begging her to join in. To fuck and to cum. She ignored them – something she'd gotten very good at over the years. Her horn glowed briefly, enveloped in a dark blue aura, and the bulge slowly lowered. It was a temporary solution, but it would have to do for now. “Look, this isn't super urgent or anything. I can come back later, if-”

“Nah, just give us a minute, we're – mnnnnnn – we're almost done.” Cloudchaser was panting more than she was actually talking, and Pumpkin politely averted her vision and held her breath.

Cloudchaser and Flitter lasted longer than the promised minute. Pumpkin was just about to give up and go home when they finished, loudly. “There, that wasn't so bad, was it?” Cloudchaser grinned as her softening cock slowly slit its way out of Flitter's well-used cunt with a wet slurping noise.

Pumpkin cringed at the noise. “Yes.”

Cloudchaser rolled her eyes. “You need to relax, kiddo. C'mon, grab a seat somewhere not covered in cum and Flitter'll make us some tea while we talk.”

Pumpkin moved carefully, to avoid stepping in any errant fluids. There were a lot of them. Celestia, did they never clean up? “Could you at least put on some clothing?”

“Not unless you wanna wait even longer, I ain’t getting dressed until we’ve cleaned up and I’ve showered.” She shrugged. “'s not like I've got anything you've never seen before.”

Cloudchaser was certainly impressive. A good foot and a half of dark, veiny cockflesh, still hard and ready to go. Of course, she noted smugly, Pumpkin was bigger.

“So,” Cloudchaser started as Pumpkin gingerly sat on the edge of a relatively clean couch, “basically, your bro's tired of always being the bottom and he's jealous 'cause you're more hung, right?” Pumpkin nodded, prompting Cloudchaser to continue. “Well, the first bit's an easy fix. Just let him top every now 'n then.”

“We used to have pretty much that same problem!” Flitter shouted from a few rooms over. “Always being the one getting fucked kinda gets boring after a while so every now and then we switch it up and let Cloudy be the top!”

Cloudchaser rolled her eyes. “Don't brag, sis, it's unbecoming.” A giggle from what was presumably the kitchen prompted more eye-rolling. “Anyway, the other problem's a little bit harder to fix. Would you mind showin' me your cock?”

“Um.” Pumpkin blushed. “Is that really necessary?”

“Not one hundred percent, but it'll definitely help a lot.” She shrugged. “You don't gotta, I guess, but it ain't like I haven't seen your bulge already, kid. Things ain't gonna get less awkward if you keep your skirt on.”

“Well...” Pumpkin was still reluctant, but she had to admit that Cloudchaser had a point. “Okay. I guess.” Pumpkin stood up and very carefully lowered her skirt, very slowly and reluctantly. Did she mention that she was reluctant? Because she was. Until this very moment, exactly two other ponies in the entire world who wasn’t a direct blood relative had seen her cock, and even then Pinkie was basically family, and there was a world of difference between this and a medical examination from the family doctor. It was, she supposed, a bit of a weird hangup. She was perfectly content to fuck her brother’s ass but she was reluctant to show her cock to two attractive naked mares.

Still, dragging her hooves about it would only serve to make it worse. Better to pull the bandage off quick and get it over with than to drag the discomfort and pain out for longer. She took a deep breath and dropped her skirt and concealer panties both in one fell swoop.

Pumpkin was, thanks to her earlier spell, mostly flaccid. It was a testament to the raw power of her arousal that she wasn’t completely soft, and it was a testament to her magical prowess that she was soft at all. And even soft she was still enormous, easily a full foot of mahogany horsecock. And it was still growing, too – it seemed like every time she measured it it was an inch or so bigger. It twitched and drooled copiously, just barely not overpowering the spell Pumpkin had cast. Her yellow furred balls also stood out quite a lot, resting heavily against her thick thighs, their copious load almost audibly churning inside of them.

“Dang, girl.”

“Holy shit.”

Pumpkin blushed, but also couldn’t help but feel a certain amount of pride. “Just outta curiosity,” Flitter interjected as she set down a tray of tea. “Do you think we could see what it looks like hard? Only if you’re okay with it, of course.”

“No, no, it’s fine, it’s not that much weirder than you looking at it while it’s soft.”

“Do you want a hand with that, or are you still uncomfortable with-”

“It’s fine,” Pumpkin interrupted. “Just need to-” Her horn and cock alike were enveloped in her magical aura once again as she reversed the arousal spell. It was like flipping a switch. One moment she was soft, the next she was painfully erect. It slapped heavily in between her tits with a wet noise before its sheer weight pulled it back down, almost parallel with the floor. The already copious precum redoubled its flow, practically a waterfall of clear, viscous liquid.

“Geeze,” Cloudchaser said after a moment’s awed silence. “It’s no wonder the guy’s jealous. You’re kinda huge.”

“Definitely in the top five biggest in Ponyville,” Flitter added.

“I’m flattered,” Pumpkin replied sardonically, blushing furiously as she tried her hardest to not stare at the naked cum-soaked mares in front of her. “Is there, like, an actual reason you wanted me to show you my dick?”

“Yep!” Cloudchaser replied before opening her mouth and darting forward and taking Pumpkin to the hilt.

“Gnhaaaaanwhatthefuck!” Pumpkin groaned as her knees went weak. She only didn’t collapse forward immediately because Flitter darted around behind her and wrapped her arms around her, slipping them under her blouse and grabbing her tits.

“You’re obviously super fucking stressed out, kid,” Flitter said as she pressed her body against her back. God, her tits were big. Pumpkin hadn’t really gotten that good a look at her, what with the fact that she’d spent much of the visit in the kitchen making tea or being fucked doggy-style, with her endowments mostly out of view. Now, well, they were still out of view, but she didn’t really need to be able to see ‘em to be able to tell they were at least the size of her head and probably bigger than Pumpkin’s. “You’re not gonna be able to hash this out unless you let out some steam, I guarantee it. Don’t worry about your brother, we’ll make sure to make this as quick as possible and keep away from your holes, and if he wants he can come fuck us at any time that’s convenient.”

She wanted to object anyway, but was cut off by Cloudchaser beginning to thrust in earnest, moving her head up and down very eagerly. Flitter, meanwhile, pressed harder and harder into her back. Pumpkin could feel her boobs more and more clearly – and also something else. “By the way, I’m not super familiar with each and every single cock in Ponyville so I dunno how comprehensive my ranking is, but if you’re number five, I’m number two~”

Pumpkin wasn’t entirely sure where she’d been hiding it. Likely some piercing or piece of underwear she had surreptitiously taken off in the kitchen had a very powerful concealment enchantment on it or something. Or perhaps she was lying and she’d drank some kind of growth potion. Because while she could at times be a bit oblivious, there was zero chance in hell Pumpkin wouldn’t have noticed what had to be four fucking feet of horsecock. She could feel it sliding its way in between her legs and lifting Cloudchaser off the ground.

“Who the fuck is number one?!”

“Would you believe Cheerilee?”

“No!”

The twins had been true to their word – Pumpkin had found herself finishing fairly quickly after the shocking revelation that Flitter’s dick was bigger than some ponies. Pumpkin elected not to put too much more thought into it than that.

She had initially been skeptical of the tea, but both Flitter and Cloudchaser enthusiastically assured her that it was just chamomile. “So like, have you tried anything yet?”

“No.”

“Well, in that case, the first thing I’d do is actually talk to him about it and hash out your feelings.”

“Absolutely out of the question,” Pumpkin said decisively.

“Communication’s important in any relationship, especially a romantic one, kid.”

Pumpkin shook her head emphatically. “He’s gonna say nothing’s wrong. Especially if there’s something wrong.”

“Ah, so he’s evasive. That complicates things.”

“Well, you could always just offer to let him fuck your butt?” Flitter said. At some point her cock had just sort of vanished – presumably whatever she did to hide it in the first place had happened again.

“And if you’re really worried that he’s jealous of you, you’ve got a fuckin’ unicorn horn, just do some magic or something to make him bigger,” Cloudchaser added. “I wouldn’t be, though. In my experience when it comes to ponies, the smaller the dick, the bigger the size queen.”

“Okay,” Pumpkin said, unconvinced.

“Trust your elders, kid.”

“Didn’t you just complain about not being that old like, twenty minutes ago?”

“I’ve still got waaaaay more experience in this kinda thing than you do, little miss monogamous.”

Pumpkin rolled her eyes. “Whatever. Your advice is give him a big dick and let him fuck me?”

“Pretty much.”

“Okay. Cool.” She pulled herself upright, cast a quick cleaning spell on herself to get rid of the cumstank, and made her way to the door. “Thanks for the advice. And the tea. And, uh, the sex. I guess.”

“No problem!”

“Come back any time for more of any of ‘em!”

Pumpkin grunted in a decidedly teenage way as she carefully made her way through the copious pools of semen – a not inconsiderable percentage of which was her own, though most of her load had ended up in Cloudchaser, who looked decidedly gravid in contrast to her earlier, more svelte appearance. She couldn’t leave this weird fucking place soon enough, as far as she was concerned. And she certainly wouldn’t be coming back in the future. Several times. Maybe bring Pound along. Absolutely out of the question.

She took a moment to bask in the fresh air. It was a nice change of pace after the thick musky atmosphere of the pegasus twins’ home, and she needed to clear her head a bit. She had, in the end, mostly wasted her time. The whole visit had taken just under forty minutes and in the end the only actual advice she’d gotten was no-brainer shit. If Pound was tired of being the bottom and jealous of her massive cock, then of course the solution was to let him top and make him bigger. None of this had, ultimately, been strictly necessary.

Of course, it didn’t really matter much. What’s done is done, and now she had to go make things right. First, she needed to stop by the library and do a little bit of research. And then it’d probably be five which meant dinner. And after that, well.

Pumpkin Cake had a plan.

Author's Note

This story shares continuity with Sex on the Beach, Morning Wood, Dinky Doo's Big Adventure, set about eleven years after the latter and 19 years after the former. You don't need to have read any of those to be able to appreciate this, but there'll be references to them in it. I'll almost certainly be doing more with this future time period because come on it's an excuse to do Cougar Pinkie Pie/Rarity/insert canon pony of your choice, and also to do lewds of Flurry Heart.

Big Brother

Ponyville’s library was something of a strange and unique situation among libraries. It didn’t used to be, of course, but there’d been Developments that had made things Weird, which was frankly bog fuckin’ standard for Ponyville as far as Pumpkin knew. Originally it had been a small, somewhat cozy building inside of an old oak tree -fittingly named Golden Oak Library. Twilight Sparkle had eventually moved in and taken over as librarian, all of which happened before the twins were even born. Then Twilight had become a princess and then the library fucking exploded? Apparently? Something about a centaur, Pumpkin had never really paid that much attention during that part of history class because it was kinda boring if she was honest. Then the old library had been replaced by a giant crystal tree palace thing that Twilight lived in. But, well, Ponyville still needed a library and, at the time, Twilight was the only qualified librarian in the town.

So now they had the unusual setup of a big ol’ crystal palace that was both Twilight’s home and also a public library. It was always weird and awkward to visit, as someone who was decidedly not royalty – this in spite of having known Twilight Sparkle for literally her entire life. It was odd, really. She had never once so much as blinked at the fact that Twilight was a god damn alicorn, but the fact that the local public library happened to be housed within a crystal palace was too much?

Though, really, Pumpkin’s childhood had been somewhat unique in a lot of ways. Most of the ponies she knew and was friends with were older, and more pointedly were all super famous. Including multiple princesses. She was pen pals with Flurry Heart, her babysitter and de-facto older sister had saved the world on more than one occasion, and her babysitter’s friends were all fashion designers and Wonderbolts and princesses and also had all saved the world on more than one occasion. When she actually stopped to think about it, her sense of normalcy was almost certainly skewed.

“Oh, hey Pumpkin! Doing some homework?”

“Something like that,” she replied a bit too casually considering the person she was talking to was one of the rulers of Equestria. “I need to check out a few books.”

“Looking for anything in particular?”

“It’s a bit personal, actually.”

“You can always talk to me about anything,” Twilight responded gently. “We’ve all been eighteen, after all.”

“I’d rather keep it to myself for now. But, uh, thanks.” Twilight seemed content to let the issue drop there, but also seemed content to keep an eye on Pumpkin. Which was mildly annoying – she really didn’t want to have to explain to Princess Twilight Sparkle why she was checking out books on sex magic. “How’s Spike doing?” she said, in a desperate attempt to keep the subject very far away from her research.

“He’s doing fine. Diplomatic work apparently keeps him busy, but he should have a few weeks off to stop by soon.”

“That’s good. Tell him I said hi if I don’t get the chance to see him.”

“Will do! You know, if you want some help finding something specific-”

“It’s fine,” Pumpkin insisted, flipping through the sheer volume of books available. It wasn’t nearly as vast as Canterlot’s library, of course, but it was still enormous and there was a lot that she needed to dig through. “I’ve had enough adults unhelpfully prodding at my sex life to last a lifetime today, thank you very much.”

“Here,” Twilight said succinctly, floating a book over with magic. “Try this.”

“Uh...” Pumpkin plucked it out of the air – a relatively recent textbook on tantric magic. She flipped through the pages before, sure enough, finding exactly what she needed. “Thanks?”

“Just do me a favour and try and keep things low key, okay?” Twilight said with a strained smile. “Because every time someone’s checked out this particular book things have gotten out of hand and I’ve not touched up the, ah, contingency spells in a while.”

“You- Why would you need contingency spells for this?”

Twilight gave Pumpkin a dead-eyed stare, her strained smile evaporating into nothing. “It’s a bit before your time but just trust me on this. In my experience the only thing more likely to go wrong than teenagers messing with sex magic is adults messing with sex magic. Try not to cause too much property damage? For me?”

“Wh- why would that be a concern?!”

Once again, Twilight’s only response was a dead-eyed stare. “Please just promise.”

“Okay I promise not to break any buildings when I- When, uh, I experiment with dick growth magic.”

Twilight glared silently.

“Okay yeah actually I can kinda see how that might go wrong.”

“Yes,” the princess replied somewhat tersely. “Please ensure that it doesn’t.”

“I will.”

“And whatever you do,” Twilight said, speaking slowly and deliberately. “Do not, under any fucking circumstances, let my sister-in-law get wind of this.”

~~~~~~

Pumpkin had been planning around taking a lot longer to find the book that she needed. Twilight’s help had been... unexpected but not unwelcome. Well, okay, a little bit unwelcome. She felt weird enough about Pinkie knowing about the whole incest thing. Twilight, at least, didn’t know that much, but it still felt uncomfortable for her to know as much about the younger mare’s sex life as she currently did. But at least it meant there was zero chance of missing hayburgers again. “I’m back.”

“Hey, Pumpkin! You’re just in time, Pinkie says dinner’s just about ready!”

“Hey, dad, mom.” Great. Her parents were around. Exactly what she wanted when she was carrying a textbook about dick growth magic.

“Whatcha got there?”

“Literally none of your business,” she replied, settling comfortably into sullen teen mode. “Stuff for school,” she added, quickly realizing that maybe sullen teen mode would make them more curious about it – which is exactly what she didn’t want right now.

“What school stuff?” her mother asked firmly, indicating that her plan hadn’t worked.

“She’s doing research for a history test,” Pinkie interjected from the kitchen, to Pumpkin’s immense relief. “It’s on the Elements of Harmony.”

“Oh!” exclaimed her mother. “Well, in that case, you should ask Pinkie Pie, considering she was there and all.”

“Already did. That’s why she knows.”

“Yep! She says she’s not allowed to use firsthand sources, though. Gotta cite textbooks or something, you know how schools are about that kind of thing.”

“Oh, well, that’s a shame. It would have been interesting to be able to give the perspective of someone who was directly involved.”

Pumpkin shrugged. “I can live without that. It’s not like I’m gonna be a historian or anything.”

“I think you’d make a great historian, dear!”

Pumpkin stifled an exasperated sigh. This was hardly the first time her mother had decided to suggest a possible direction for her to take her life. “I’ve got plenty of time to decide what to do for a living. And anyway, my cutie mark’s a pie, I’m probably gonna bake.”

“You don’t have to follow your cutie mark, dear. Look at Rarity, her special talent is mining!”

“Mother please, I’ve got homework to do,” Pumpkin replied, settling comfortably back into sullen teen mode.

“Dinner’s ready!” Pinkie said with typically impeccable timing, leaning out of the kitchen with a plate holding two hayburgers, some fries, and some token vegetables. Pumpkin quickly darted over and grabbed it with her magic – and then a second plate, for Pound.

“Thanks, Pinkie,” she said succinctly before swooping up the stairs to her bedroom. She dimly registered a faint “you’re welcome!” from her father (who had contributed the ingredients and nothing else), but mostly ignored it.

She had work to do.

“Hey, buttface,” she said, floating Pound’s plate over to the desk, where he was still studying. The smaller stallion floundered slightly to get his notes out of the way of the incoming burgers. “Dinner’s ready.”

“You coulda given me some more notice,” he grumbled. “Thanks.”

“Yeah, whatever,” she replied somewhat flippantly. She was in a bit of a Mood, and while Twilight and the pegasus twins had somewhat distracted her from it, having to deal with her mother had soured things again and now that she was face to face with the reason she was in a bad mood in the first place those negative feelings came surging back to the forefront.

“Are you still mad?”

“Eat your hayburgers. I’ve got something I wanna try out.” Pound opened his mouth to reply, but Pumpkin cut him off. “You’ll like it. I promise.”

“Given the context, I kinda doubt that,” Pound replied with a dubious expression. “Look, sorry for snapping at you earlier. I’m just kinda tired lately. Maybe we can have a quickie after dinner, okay?”

“Eat your hayburgers,” Pumpkin repeated succinctly.

“... Ooooookay?” Pound took a bite of his burger. “Look I get if you’re still mad, but-”

“I’m not mad.”

“That is literally the opposite of reassuring, sis.”

“I’m not mad!” she repeated, angrily eating her dinner.

“You’re pretty clearly mad.”

“Eat your goddamn hayburgers.”

“I literally am.”

“Good!” Pumpkin hefted the textbook with her magic, quickly flipping to the relevant page.

“What’s that?”

“It’s a book, what does it look like.”

“A book?”

“Exactly.”

“Okay but what kind of book.”

“Eat your-”

“Hayburgers, yeah, I know. I am doing so as we speak, trust me.”

Pumpkin, as established, had never been the best at subtlety. She wore her thoughts and emotions on her sleeve. So it was really painfully obvious, even to her, that she was in a bad mood. She furiously scoured the pages, making sure to take in every single little detail of the spell as best as she could given her increasingly foul temperament. Which, granted, wasn’t really very, but she tried her best. She had promised Twilight that things wouldn’t get out of hand, after all, and she didn’t exactly have much experience with dick growth magic so there was actually quite a lot that might potentially go wrong. Still, focusing was difficult, between typical teenage moodiness and the fact that she was still very horny after her encounter with the pegasus twins. “Okay,” she said eventually. “I think I’ve got it. You finished your hayburgers?”

“Yeah.”

“Okay cool.”

“... What exactly do you have planned?” Pound asked nervously.

“You’ll see.”

“That doesn’t fill me with confidence!”

“What does fill you with confidence? Trust me, I’m good at this magic shit, you should know by now.”

“Once again, I find myself dubious, but okay.”

“Shut up and take your damn clothes off, wise guy.”

Pound sighed, clearly not very surprised that it was, in fact, a sex thing. “Okay, compromise.”

“Ugh.”

“Compromise,” Pound repeated firmly. “If my studying is gonna get interrupted, I wanna be in control for once. And after we’re done we’re gonna get some schoolwork done. Okay?”

“Yeah, fine,” Pumpkin replied with a shrug. “Lemme just...” She let go of her plate, her magic quickly catching it before it actually fell, and grabbed the book out of the air to do one last read-over of the spell. The plate hovered its way over to the desk, settling on top of Pound’s. “I wanna make sure I get this right...”

Unicorn magic was a somewhat complicated thing. Pegasus and Earth Pony magic was all instinctive and automatic. Supposedly they could learn how to use it more actively, but there wasn’t really a reason to for the most part, as Pumpkin understood it. Unicorn magic, however, was all active. Hypothetically speaking, any unicorn could cast any spell. They just had to learn how. The problem was that relaying how to cast a spell was complicated. There weren’t magic circles or magic words or magic wands or anything like that. You just sort of did it, and hopefully it worked. If you had a relevant cutie mark, it would be more likely to be successful. But most of the time, ponies didn’t have the relevant cutie mark for any given spell they needed.

Still, Pumpkin had always been somewhat gifted in that regard. She didn’t have magic as her special talent, like Twilight or Trixie or Starlight, but she was still better at it than most unicorns who didn’t have magic as their special talent. Probably a result of growing up with Twilight Sparkle right there. Not to mention Trixie and Starlight, and honestly numerous other extremely powerful unicorn mages that tended to gravitate to Ponyville for some reason. Probably because Twilight Sparkle was, again, right there. She had convenient tutors out the fucking wazoo, many of whom were family friends or friends of family friends. Add in a natural knack for magic (or at least according to all the aforementioned convenient tutors) and she had ended up something of a prodigy.

Of course, the problem with being a prodigy was that it often led to you overestimating your own abilities. Pumpkin, to her credit, was at least aware of that fact, but if anything being aware of it made things worse because it led to her second guessing herself. Did she actually have the requisite knowledge and magical power to Do Thing, or was she just overestimating herself? Or was she underestimating herself out of fear of overestimating herself? In the end, she found the best course of action was to just fucking do it and deal with any potential consequences after the fact. So long as she did her best to ensure she got things right, it was never too hard to clean up her own mess if things went wrong. She’d heard horror stories of other ponies who had miscast and ended up needing the intervention of the Princesses to avoid Actually Literally Dying as a result.

“Okay so you need to keep your mouth shut. I need to concentrate and keep my mind in the right headspace or we run the risk of a magic surge or a miscast, which you really don’t wanna happenif I’m gonna be casting magic on you.”

“Okay see saying things like that is the exact polar opposite of reassuring sis.”

“What the fuck did I literally just say about keeping your mouth shut?” Pound rolled his eyes but complied, biting his tongue on the various snarky comebacks he had in mind. “And take your god damn clothes off already for fuck’s sake Pound.”

“Only if you take yours off first.”

“For Celestia’s sake Pound don’t be difficult now you’ve already agreed to participate in this-”

“On the condition that I get to be in control, yes.”

“You can be in control of the sex! But this is my area of expertise, and if I fuck up bad things could happen so please just take my lead and stop being a butthead.”

“I’m not being a butthead, you’re being a butthead.”

“Clothes! Off! Now!”

“Okay, okay, geeze-”

“And no talking ‘til the spell’s cast!”

Once again, Pound shut up, but once again he made his opinion on the situation clear by rolling his eyes and by not giving the striptease any ceremony. He tossed aside his shirt and his pants and his underwear into a small pile off to the side, and then made a vague gesture. “There, nake-”

“No talking!”

Pound wasn’t an unusually small pony so much as Pumpkin was unusually large. It wasn’t, as they understood it, a particularly rare condition. She counted as intersex, though technically speaking she was a hermaphrodite because both sets of equipment were fully functional – aside from her male half being infertile without magical interference. Apparently that was an option? She didn’t exactly have much interest in being a dad, though, so she was mostly okay with her copious loads not actually having any sperm in them. But that was a digression. The point was that Pound was hardly unattractive. He was five foot eleven, which was exactly average in comparison to Pumpkin’s height six and a half. Likewise, while Pumpkin’s dick was a two and a half foot monster (and still fucking growing), Pound’s footlong sausage was hardly small by normal metrics. And, being completely honest,there were some aspects where he was the bigger sibling! More specifically, his wide hips and his big fat fuckable femboy ass. Like, was it really so surprising that she liked to put her penis in it? She didn’t think so.

“Okay,” she said, kneeling down in front of Pound, putting herself eye-level with his shaft. “I’m gonna cast the spell.”

“Pumpkin why are you-”

“No talking.”

“Fine, fine, I’m shutting up now.”

“Sure doesn’t sound like it. Now seriously, be quiet and let me focus.” Pound did, in fact, be quiet. Pumpkin only barely noticed considering she was putting most of her attention into the magic. Casting Unicorn magic was complicated in a very abstract sort of way, which was difficult to put into words. Twilight had managed to do so while teaching her, but it was very... technical and scientific wording that had mostly flown over Pumpkin’s head. She got the gist of it, of course, but ultimately it meant she had a hard time explaining what she actually did.

Her horn glowed a bright blue that extended around Pound’s cock and balls. It tingled, in a way that was weird but not unpleasant. He did his level best to not make any vocalizations, but that turned out to be harder than it sounded. With effort, he kept it to heavy breathing as his shaft twitched to life. It throbbed and pulsed as blood rushed south, quickly rising to full erection.

And then it kept right the fuck on rising.

“There we go!” Pumpkin said, the glow extinguishing. “The rest should just sort of happen on its own and by the end you should be reasonably bigger than me!”

“Is that seriously it.”

“Well, yeah. Duh.”

“For Celestia’s sake, Pumpkin, you insatiable size queen.”

“Hey, you’re the one who’s jealous. Don’t go projecting your issues on me.”

“I’m- I am not jealous! I’m just annoyed that I always bottom!”

“Keep telling yourself that babe. And anyway even if it’s true I’m not fuckin’ taking it from a dick that’s smaller than mine.”

“What was that about me projecting being a size queen on you again?”

“Eat my entire asshole, Pound.”

“Not quite what I’m gonna be doing to your asshole, sis.”

“I thought you weren’t into this?”

“I’m not but that doesn’t mean I’m not horny.”

“Yeah, whatever, shut the fuck up, I’m gonna give you a blowjob.”

“Yeah okay sounds like a plan.” Although, on the other hoof, it was probably a good idea to be a little bit careful with putting it inside of her for now. At least until it was done growing. After all, she had no experience with growth magic. She’d read the book, of course, so she had some idea of how big that Pound was likely to end up. But there was a world of difference between theory and practical application. There was always the possibility that she’d misread or misunderstood the spell’s effects, or that she’d done something wrong, or even just that she was underestimating how big the end result was gonna be.“... maybe a titfuck instead.”

Clearly Pound was having the same worries. Hell, if anything, his were probably more pronounced because he was less familiar with unicorn magic. Though, on the other hoof, he wasn’t the one who was gonna be taking a growing dick inside of him so maybe he could stand to stop bitching. But now was probably a bad time to be contrarian so Pumpkin decided to ignore that fact for now. “Yeah probably a good idea. Sit on the bed.”

“Excuse you. I thought I was in charge this time?”

“Okay fine I’ll just give you a titfuck while standing up.”

“... Fair enough. Just, like, remember that I’m the boss.”

“You’re the boss, you’re the boss. Now stop being stubborn and sit.”

Pound obeyed, walking over to the bed and heavily sitting on the edge. He was clearly not particularly pleased with being bossed around, but he did it. “I promise you this is the last thing that’s even close to an order that’s gonna happen.”

“Yeah, yeah, sure.”

“Okay, good, glad we’re on the same page.” Pumpkin snapped her fingers and, with a flash of blue light, her own clothes vanished, reappearing in a neatly folded pile well out of the splash zone. She sauntered over to the bedside and stood over her smaller brother. Smaller in terms of height and hungness alike. Though the latter was only true for the moment. Its jet black length already reached much higher up on his torso than it normally did, and it was slowly pulsing bigger with every moment they wasted not fucking. So Pumpkin decided that fuck it, she wasn’t gonna miss this chance to fuck a dick that was getting bigger. Fuck any kinda buildup, she dropped to her knees and shoved it in between her tits and got to work.

In spite of the fact that Pound typically bottomed, Pumpkin had in fact titfucked him before. She might have been a top, but she also had tits and Pound didn’t. It wasn’t really either of their preferred sex act, but it did at least make for good foreplay. And obviously Pound couldn’t give Pumpkin a titfuck because, duh, he didn’t have tits. And so she was, at least, experienced enough in titfucking. Normally she’d probably have taken it slower, but she wasn’t in the mood to take things slow. She squeezed her tits together around the shaft and pumped them up and down, pressing her face and licking it eagerly.

“A-ah!” Pound’s hips bucked and he placed his hands on hers – probably intending to take some amount of control. But in practice his hands were too shaky, his grip weak, and so it ended up being the other way around. Not that Pumpkin minded. She was willing to let him at least pretend to be in the driver’s seat for now, especially since he wasn’t supposed to be pretending. Once he was done growing he’d probably be able to take on a more active role in proceedings. For now she was content to just keep doing the titfuck. Technically he’d asked her to do it so technically he was in charge, even if she was doing all the work. And, like, fuck it, the girl doing all the work was kinda the point of a titfuck anyway.

“S-sis, this feels really – mngg – r-reallygooooooood.” Pound’s statement was punctuated by what had to be a fuckin’ gallon of precum. An absolute absurd volume – especially by his normal standards, but even compared to Pumpkin’s it was a lot.

“Damn right it feels good,” Pumpkin bragged in between licking at Pound’s cock. She couldn’t see them, but she was one hundred percent certain that Pound’s balls were bigger than hers right now. Which was good because it meant that the main event was coming up shortly.

Pound’s meat swelled at the base, thicker and bulkier, which slowly moved its way up and up and up his length. This was it. “S-somethin’s happeningggggg~”

Pumpkin did not regret their mutual decision to not put Pound inside of her. That bulge got bulgier and then flowed upwards, just about doubling in girth and getting proportionally longer to match – Pumpkin had to dodge backwards to avoid getting bumped in the chin. “Dang, that’s more like it.”

“Fuuuuuuck~”

“That’s the idea, bro.”

“No, no, I mean- aaaaaahnnnnn~” Whatever Pound was gonna say, Pumpkin cut him off with a long, languid lick of his throbbing, leaky member. And sweet Celestia was it leaky. Pound, in addition to his average size, had also always had average productivity. Maybe a bit above average? Admittedly, her perspective on productivity was a bit skewed by being absurd herself. But, as of right now, his precum made his average orgasm look like nothing. What had to be gallons of the stuff flowed down his shaft like a fuckin’ waterfall. And that flow was only getting more and more intense as Pumpkin picked up the pace of her titfuck. “S-sis, I-”

“Less talkin’ more cummin’.”

“Sis, I- I- I think I’m not doahhhhhhhhn~”

It wasn’t the fact that Pound grew again that made Pumpkin realize that something had gone not according to plan. That bit actually made sense – the point was that he was supposed to be bigger than her, not as big as her. And yeah, okay, doubling in size again left it kind of absurdly large but also that was the point. A bit more than she’d intended but not that much more, certainly not enough to be out of control. Slightly more concerning were the balls, which at this point were more than twice as big as Pumpkin’s. Closer to being out of control, but not something that couldn’t be dealt with. They had condoms and worse comes to worse she’d gotten very good at magically cleaning up absurd volumes of cum in her time.

No, it was everything else that grew which made Pumpkin realize things were out of control. Pound had always been a bit of a femboy. Big ass, wide hips, she’d been over this before. The ass had gotten bigger and the hips had gotten wider. Maybe that was just a necessary bit of foundational expansion, she lied to herself, in order to fit four feet of meat. That just made sense, and she’d probably not have registered it except for the fact that he’d also gotten taller. Like, a lot taller. Taller than she was, noticeably so, which was saying a lot because she was already pretty fucking tall.

And speaking of things that were bigger than hers, he had breasts now and they were in fact bigger than hers – by like a lot. And judging by the way he writhed and moaned and his hips bucked and his cock oozed with precum even without direct stimulation, he probably wasn’t done growing yet.

Pumpkin swallowed heavily. “Man,” she muttered. “Twilight is gonna fucking kill me.”