Pound Cakes

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 Then the old library had been replaced by a giant crystal tree palace thing that Twilight lived in.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.”