Pounding Pinkie, Pumpkin's Pie

by LegionofPony

Rating: mature
Tags: Cake Twins, Porn, My Little Pony: Friendship is Magic, Pumpkin Cake, Romance, Pinkie Pie, Sex, Pound Cake, Slice of Life
Length: 9710

Pinkie decides to give Pound a special present on his birthday...and ends up giving Pumpkin one too.

It's the Cake twins' birthday, and Pinkie decides to give Pound a special gift: a mare in heat to release his adolescent urges into...and to quell her own seasonal desires with him as well. But when Pumpkin catches them in the act, how ever will Pinkie resolve the issue?

By getting her involved too of course!

~ ~ ~

Contains: M/F/F threesome, anatomically correct ponies (including teats and clitoral winking), pregnant filly via incest, a loving incestuous relationship, kissing between a brother and sister, mild persuasion, implied sex while pregnant, semi-incest/incest by proxy, a mare in heat, pheromones/scents, consensual foalcon, mare on colt sex (vaginal), mare on filly sex (cunnilingus), internal cumshot, female squirting, brief colt on filly sex (incest; vaginal), brief filly on mare sex (cunnilingus), and unintentional impregnation, as well as a couple brief, non-sexual mentions of urine.

~

This is a submission for Dezmo's NSFW Contest.

EDIT: Won Judge's Choice Award from Jade Ring. Thanks, and glad you loved it!

~

EDIT: Featured on 8/23/22, woo!

Credits:

This was fully written and primarily edited by me, and co-edited by my friend RainbowFire1999. Thanks for the help!

Coverart is a cropped image by 'mintbubble' on Derpibooru, and was recovered from there. It can be found with the number 1648126.

This story is based off of art by 'dctx95' from Derpibooru. It can be found with the number 2864776. I also wanted to use this as my cover art, but apparently it was Too Hot For FIMFic™, no matter how cropped it was.

Published 2022-08-22 18:50:01 UTC
Last updated 2022-08-22 18:50:01 UTC

Pinkie's Pounding

“Happy Birthday Pound and Pumpkin!” Pinkie half-shouted, blowing a party horn and plopping a pointed paper party hat on each of the named twins’ heads at once, “Wow, I remember hosting your month-iversery like it was yesterday, and now you’re so much older! Now, who wants some cake?! I made it special just for you two today! Who gets the first slice?!”

“Me!” Pound shouted, pushed ahead of his older sister with his whole body, getting in front of Pinkie first, and stuck out his tongue at his sibling.

“No me first! I was here first! Plus, I’m older, so I should get the first slice!” Pumpkin said as she tried to push her younger-than-her-by-mere-minutes twin brother away again, though failing against the bigger colt’s strength.

The siblings, as per usual, were having a fight, this time over something as insignificant as who would get the first slice of cake.

“Stop! Both of you! And be nice to your sister!” Carrot Cake, the twins' father, said.

Though Pinkie had already gotten used to these little arguments, and more often than not found them funny, with how silly the things they fought over were, she didn’t approve of Pound getting physical. Their little quarrels reminded her of her fillyhood on her parents' rock farm, and having a twin of her own to contend with. Pinkie had a simple solution to the problem though, hoofing over both of the twins a slice simultaneously.

Pound looked abashed at his slice, quietly responding to his father, “Y- you’re right. Sorry Pumpkin…” before then letting Pumpkin lead the way back to the table.

“And be nice to your sister, too, because she’s carrying your foal!” Cup Cake, their rather pregnant mother, added, sitting herself down at the table.

That was true, Pound well knew, making him bow his head in shame at acting out towards his foal's mother and his sister in one. Given it had been the Spring mating season, their ages, and some freak chance, Pound had learned about sex by watching his parents conceiving their newest siblings. He had executed that new knowledge into action at the same time Pumpkin and Flurry Heart had, unknown to them all, both had their first estrus. The two fillies had ended up being impregnated by Pound Cake on the same day, bred less than a mere hour apart. Now, Pumpkin bore his foal, about five months along at that point, and her baby-bump had really started to show.

They partied in harmony together after that, enjoying the delicious cake they’d been made by their ‘Auntie’ Pinkie Pie, though they really preferred to view her as a wacky older sister. “C’mon, can we open our presents already?” Pumpkin asked impatiently, before they'd even finished the second slices of cake they'd wanted.

“OK, OK. Here,” Carrot Cake said with an amused little huff, before bringing over their gifts. They each got an individual present - Pound receiving an Action Ponies toy he’d been wanting, and Pumpkin getting a pretty new pink dress - and they also got a much larger shared gift. In it were a large amount of foal clothing, including onesies, as well as diapers, wipes, and a number of other foal-related toys and such. Pound and Pumpkin both looked a little disappointed, but it was clear their parents were making a point: that they would no longer be responsible for only themselves. The little foal Pumpkin and Pound had decided to keep certainly would change their lives, and they'd have to think about more than just their own wants and needs after it was born.

“Thanks Mom and Dad,” Pound said, sounding slightly disappointed that they didn’t get something really cool instead.

“Hey, Pound,” Pumpkin said, her brother looking over to her with a small pout on his face, before she took his forehoof gently between her own, and put it on her swollen lower belly, “It’s for our foal, remember? It can’t be just about us anymore. Remember that talk we had when we decided to keep him or her?” Pumpkin smiled, and managed to bring back a smile to her sibling's - her lover’s - face too, after having put his hoof on where their child slowly grew. “Thanks Mom and Dad. Our foal will really like them.”

"You're welcome," Cup Cake responded, with Carrot nodding in agreement, "happy birthday."

Then Pinkie smiled big, before, in a flash, there were two more, larger presents on the table, one in front of each twin. The filly and colt smiled largely, expecting only the best presents from Pinkie, as she was known for always giving exactly what the gift recipient wanted. Tearing the pink-striped packages asunder, both foals squealed with joy as they saw what lay within.

A JoyBoy™ hoof-held game console and a hooffull of the most popular games were for for Pound, and a full set of Pretty Pony Princesses™ poseable figurines - featuring Princesses Celestia, Luna, Twilight, Cadance, and even Nightmare Moon, a very sought-after collectible that was hard to get anymore...as well as Flurry Heart... all with bonus accessories - were for Pumpkin. The sight of that last figurine made both foals blush at the lewd memories both had of sharing such intimacy as conceiving with or alongside the youngest princess.

Both foals pranced around in joy for a bit, before showering Pinkie with thanks and hugs. The two parents watched on, a smile on their faces, as Carrot gently stroked the distended belly of his wife, her hoof resting atop his. Both eagerly awaited the time to meet the two little ones growing in her womb. Then they got their own turns of hugs and thanks from their twins, and smiled too at the thought of getting to share moments like this with their new pair of twins too.

~ ~ ~

“OK kids, time for bed!” Carrot called out, getting an expected, disappointed ‘aaaaw’ from the two foals currently dogpiling on Pinkie, “Come on now, it’s nearly midnight! You’ve already been up an extra four hours past your bedtimes since its your birthdays, and we have things to do in the morning.”

“But Daaaad, can’t we play with our new presents more? I almost beat the first boss in Maretroidvania!” Pound asked impatiently and eagerly, only having stopped playing his game when Pumpkin had nipped his ear and all but dragged him into a chase with Pinkie, which had just recently ended in a group-hug and giggles.

“No, Pound,“ Carrot insisted, shaking his head, “Pumpkin really needs her sleep, and so does your mother, given their conditions, and like I said, we have somewhere to be early tomorrow. Besides, surely you’re tired after so much playing today?”

“Not really...” Pound said, his tail swishing a little in annoyance. He supposed this was just one more change their actions upon that day months long past had brought about, on which they’d discovered, with Flurry, what estrus and unprotected mating were in the most direct way possible, and which had been cemented upon deciding to keep the consequences thereof. “...but okaaaay.”

“That’s my boy,” Carrot said with a smile, before giving his son a playful ruffle of his mane, as well as a kiss on the forehead, “Happy birthday.”

“Thanks, Dad,” Pound replied, then walking over to Pumpkin, who was already waiting for him to join her in front of the stairs leading to their rooms. They then proceeded upstairs, with him letting her brace herself against his side some as they did.

“Night, Pumpkin!” Pound said, giving his sister a little, loving kiss on the lips, “Wait, before you go…did you wanna maybe…have me sleep with you in your bed tonight?” Pound gave her a smoldering look, only to get one of annoyance back from her. “Aw, c’mon...it’s my birthday.”

“It’s mine too, but no, Pound, I don’t want to do…that right now. I just wanna go to sleep. This foal is…well, it’s making me really tired, having to carry it around all the time and share my food with it,” Pumpkin said, giving a little sigh, “I can’t say it isn’t worth it, but…it’s kinda...hard.”

“It’s not the only thing that’s hard right now…” Pound mumbled to himself, loosing a small sigh of his own. “...OK, maybe tomorrow or something then?”

“Maybe…” Pumpkin said, before giving her brother another, deeper kiss on the lips, feeling him pushing back as eagerly as she did, before she yawned grandly, “...but just not tonight, OK? I love you, and happy birthday.”

“I love you too, sis. Happy birthday.” Pound said as he watched Pumpkin - his sister, his lover, his mate - walk away and enter her room, giving a soft shake of his head before heading to his own next door. When they’d first discovered sex, Pumpkin couldn’t seem to get enough of Pound sneaking in her room and bed nearly every night, getting on top of her, humping away into her ferally, before both would be brought to a glorious climax, often together. They'd not stop until they were holding hooves in an afterglow, after enjoying their second or third times together. Recently, though, she’d been getting more and more lethargic, needing to sleep longer as their foal grew within her, and that left Pound…to use his hooves or a wing to satisfy his new needs more often than not.

Laying down on his bed, eyes wide open, Pound sighed, before lifting his wing with a cheeky grin. Digging under it, he pulled out his smuggled JoyBoy with a hoof, powering on the device. It was his backup plan in case Pumpkin had said no to some special time together again, like she so often did lately. Maybe he could beat the boss, then go to bed. By that time he may actually be tired, and have one more thing off his mind. Plus, it helped take his attention off…other things. Particularly something that was currently tenting his sheets.

~ ~ ~

Pinkie Pie was careful not to make a noise as she snuck up to Pound’s room. She didn’t want to startle the colt if he was sleeping, nor to wake up anypony else. She carefully opened his door and snuck inside, and when she was close to his bed, about to wake him up, she could see that he was, in fact, not sleeping after all. The video game hoofheld he had been given was flickering lights through the room. She realized that he had indeed smuggled his JoyBoy into his bed, clearly only too eager to beat the boss he was on. Pinkie struggled holding back her laughter, finding it quite amusing how much the two twins often reminded her of herself and Marble as fillies.

Gently, Pinkie Pie pushed her muzzle against the young colt, trying to get his attention. As she nuzzled him, though, she startled him despite her best efforts not to, getting a soft yelp as he dropped the console, hearing an obvious death sound from the JoyBoy, followed by a rather cartoonish-sounding ‘YOU LOSE’.

Given it was just Pinkie and not of one of his parents, instead of being scared that he had been caught red-hoofed smuggling his birthday present up and playing it instead of sleeping, he was more upset about losing. “Oh c’mon, I almost had it! He had only 20 HP left!” Pound complained, pouting at the older mare, “what’re you doing in here anyways? Aren’t you supposed to be sleeping too? You're coming with us tomorrow, right?”

“Oops, sorry!” Pinkie said, giving a little frown. She felt slightly bad for having ruined his mood, but quickly had an idea of how to make it up to him, her grin coming back: “But I know something that will bring a smile to your face again! I have another present I couldn’t give you earlier, just for you! Something super-duper-EXTRA-special!”

“Oh, really?!” Pound asked in excitement, his mood taking a complete u-turn at the promise of a secret present, his tail swishing under the blanket.

“Mmmhm, something super special and secret, that’s why I couldn’t give it to you at the party,” Pinkie said, her own tail swishing slightly, but for an entirely different reason: she’d gone into heat earlier in the day. Memories of walking in on Pound’s, Pumpkin’s, and Flurry’s aftermath when he’d given them both foals - seeing them all three sprawled out, covered in his seed, and Flurry and Pumpkin's wombs slightly bulging with the same, oblivious to what they'd just set into motion - going through her mind. And the smells that had been in that room...

Those memories had been fuel for her ‘private time’ for months, especially when she was in heat, and that day was no different. As Pinkie thought more and more about the virile little colt as she'd fruitlessly tried to reach orgasm earlier, the foal she’d seen grow up from his very first day, she started thinking of an excuse to have sex with him; to get a taste of what the other two fillies had gotten that day, and soothe the burning inside her. Giving him a birthday gift seemed like the perfect reason she could get that which she so desired from him, spurred on by her instincts to go to the stud colt tonight.

“What is it, what is it?!” Pound asked eagerly. He felt some excitement that he was getting a special gift from his favorite friend, and also, to an extent, he was receiving a present his sister wasn’t.

“Well, since it’s something super secret, you can’t tell anypony. Not even your sister!” Pinkie said, giving Pound a wink of the eye, and another one, unseen, beneath her tail.

“OK, OK, I won’t tell. Now, what is it?!” Pound asked with some exasperation. He didn’t much like being teased, after all.

“Well…” Pinkie said, before lifting her tail up fully.

It was then that Pound’s nostrils flared as Pinkie figuratively uncorked the bottle so close to him, sniffing the air, and smelling quite clearly a very distinct scent. The same scent which had led to him discovering the pleasure of rubbing his willy that fateful night. The same scent that had led to him learning about sex as he watched his parents conceive his and his sister’s newest siblings.

The same scent that instigated him first discovering the sexual bliss his body could bring him with his friend Flurry Heart and sister Pumpkin.

The same scent that led to him unintentionally knocking up his best friend, and his own twin.

The scent of a mare in heat.

Pinkie, meanwhile, knew Pound was at the age all mothers hate their colts to be in the most - hormonal, and willing to hump, and cum inside of, pretty much anything that has a whiff of estrus on it given his youthful lack of self-control. So, as she earlier couldn’t reach her climax alone, she decided to capitalize on that fact in her own need, and soothe the desperate urge to find a virile stallion, have him rut the estrus out of her, and have his seed cool her burning womb.

“A-are you ‘in ‘eees-trust’ Pinkie? I can…smell you…” Pound asked, reluctant to ask the mare, who he had always seen as a big sister to him, something so private, before feeling a small amount of panic growing in him. And it wasn’t the only thing growing about him. “This…I feel…this isn’t good! Y-you shouldn’t be here! It’ll make me…” But, before Pound could elaborate his thoughts further, he already felt the result of her pheromones on him. Feeling a distinct tingling and tightness growing in his sheath, his mind numbing as his deepest instincts to reproduce, to breed and make more of his kind, were hooked into and dragged up to the forefront of his psyche by that sweet, musky scent. All he could think of was mounting this fertile mare, and doing as his natural instincts dictated.

Pinkie, even in her own throes of need, was aware that she shouldn’t do this with Pound. After all, she was a full-grown mare, and him just a colt, but it was simply too tempting to give this foal the best of all gifts; what she knew he truly wanted more than any material goods, something that all colts his age desired. Something that she wished she could have been given during her first estrus too, instead of being locked into her room, with nothing more than her hooves and a long, slim, ‘Filly’s First Cooler’ dildo to help ease the overwhelming burning she felt during her first estrus cycle.

The gift of a mate, one to spend his adolescent urges into.

Pinkie’s lust, too, was taking over her mind, and she turned around, presenting her rear to the young stallion, but teasingly keeping her tail down. “It’ll whaaaat? Make you haaaard?” Pinkie asked in a singsong tone, “Is that really a baaaaad thing though? It just looks like you’re loading up your Poundie Party Cannon for me!” she said playfully, before looking over her shoulder and noticing a very distinctive tent forming in the sheets above Pound’s crotch.

Incensed by the sight of the young colt growing erect because of her, and the scent of a virile male so nearby, she wiggled her rump suggestively, before her dark-pink tail flagged up and aside to the young colt, revealing her glistening, winking marehood. Pinkie could feel Pound’s gaze glued to her deep-pink pussy, and she looked over her shoulder and gave Pound a wink of the eye. Then, to invite the young stallion to mount her, a wink of her clit.

Pound stared dumbly at the adult mare presenting herself to him, memories of when he’d first explored the bodies of Flurry Heart and Pumpkin coming back to him, and remembering as he’d mated with them, bred them. Given them his foals. Her feminine musk was also hitting him harder as she backed up and pushed her crotch closer to him to give him a better view of her neediness, making the tent in his sheets twitch, and causing a little whimper to come from his throat. A whimper, Pinkie quickly realized, of desire.

Getting impatient, having a proven-virile colt so close to her, yet still not on her back and inside her, Pinkie started begging as the burning sensation within her rose, the scent of a stallion getting stronger as Pound clearly grew aroused. “Pleeease, Poundie, give Auntie Pinkie a good pounding!”

“Y-you want me to…to do what I did with Pumpkin and Flurry, to you?” Pound asked, surprised, before then wailing, “but if mom or dad find out?! They’d be furious!” He shook his head.

“Duh, that’s why I told you that it’s a secret present! So, Pound, do your name proud and pound my proliferous pink pony-pussy, please! Put your penis in me and spurt your special super-sticky stallion stuff in me!” Pinkie said excitedly. Struggling against her needs, she had swiftly rolled onto her back on the floor, starting to hoof her needy parts gently, giving the colt a good view of what he could be enjoying right now and trying to urge him on further, “I even got on my back so you can climb on me and put it in easier. Just, please do me!”

"’D-do you’? Do what to you?” Pound asked, clearly confused.

“Put that in me," Pinkie said, pointing at the growing bulge in his sheets, causing Pound to squirm and look away bashfully, "and move your hips until you explode all your foal-goo inside me!”

“B-but when I did that with Flurry and Pumpkin…when I did ‘the sex’ with them and squirted my colt-mi—I mean 'seeeh-men'...in their 'yoo-tur-is', while they were ‘in heat’ and 'oove-yoo-late-ing’, they…I…I kinda…accidentally gave them each a foal…" Pound said, looking a bit shameful, "I…I didn't mean to! I didn't even know what we were doing! All I knew was it just felt really good to do, and I wanted to do it with both of them! Then mommy and daddy sat us down, after you sent somepony to get them and told them what we did, and told us how 'having sex' makes foals when fillies smell like Flurry and sis did, and…Pumpkin said she really wanted to have one with me. Flurry’s mommy and daddy said Flurry said she did too. They chose to carry my foals, even if it meant they’d need to spend a lot of time growing them in their ‘yoo-tur-is…es’, then giving them milk from their 'teats' and taking care of them after they're born. Like…mommy milk, not…colt-milk."

“‘Colt-milk’?” Pinkie asked, cocking her head and giving Pound an odd look.

“Yeah…that’s what I called the sticky white stuff that comes from a colt’s willy and…makes foals if it gets in a filly’s…inside parts. His ‘seeh-men’.” Pound said, his cheeks tinting pink.

“Foals…” Pinkie replied dreamily, her clit winking at the thought, her hormones making her very much desire a foal. Wanting, in her estorous state, to see her pregnant pink belly swell up big in the coming months, her teats getting heavy with milk in the last weeks, and of course to hold the newborn in her hooves: to embrace the beautiful, small pony she’d helped create, then carried for eleven months after its conception.

“I…I really want you to put your willy and your ‘colt-milk’ in me then, Pound!” Pinkie said, her clit winking again, some of her thick, profuse lubrication dangling off of her vulvar cleft in a broad string, swaying slightly midair with each motion of her hips.

“And…and what if…if I did that, then you got a foal growing in your belly too…?”

Pinkie thought for but a moment, before she simply squirmed on the floor, tail still aside, the dangling string of her fluids now connecting her clit and tail. “Oh, don’t worry about that. I’ll take care of it,” Pinkie said, giving a disarming smile.

Pound gave a relieved smile back as Pinkie seemingly had it covered, not asking for clarification on just what she’d take care of. Instead, he pushed the sheet and blanket aside and climbed off the bed, his dark-brown colthood hanging thickly beneath him. “O-OK…” Pound said, feeling some confidence growing as he approached the presenting mare, who had clearly offered to let him mount and breed her.

“T-that’s a good colt, now c’mon…” Pinkie coaxed, her tail swishing slowly in anticipation, her clit never stopping its instinctive beacon to the approaching male as it slid in and out of her hood. “Give it to Pinkie good. Let me show the birthday colt what the pussy of a grown-up mare feels like. I know you got to feel how Pumpkin and Flurry felt in there, but…well, you’re not my first time, Poundie! I bet I can make you feel even better!”

Pound felt as if his hooves were moving on their own, memories of climbing over Flurry's back his very first time, then when she’d ridden him to completion soon after, claiming his essence into herself as he sired her foal coming back to him. “W-what’s a ‘pussy’?” Pound asked as he got so close that his muzzle was only about half a foot from her winking, swollen, and quite musky marehood.

“Right here, silly!” Pinkie said, before she reached down between her legs and spread the dark-pink lips of her vulva with her forehooves, exposing a lighter, nearly-reddish interior. Pound shuddered at the sight, but not an unpleasant one, his colthood throbbing as she winked again while spread open. Pound leaned in closer, until he was almost touching her needy flesh, before another wink booped him right in the nose, her tail’s tip meanwhile giving his chin a soft, teasing tickle.

Pound gave another whimper of need as his shaft throbbed hard, making a hollow thud mixed with a meaty slap of flesh on flesh as it hit his underbarrel. He could smell her musky scent so strongly now, feeling the urge to rear up, to mount her, nearly overpowering. He did just that as he stepped over her, slipping his hooves into the curves of her stifles, his chest resting on her belly and his stomach against her teats. He could feel her hard nipples grinding into him, making his cheeks flush red again. “Y-your teats are so much bigger than Pumpkin’s…and Flurry’s…” Pound said, feeling the big mammaries bumping against his hard shaft as it dangled teasingly close to her mare-parts, able to feel the intense warmth radiating off her down there against his balls. “...OK, so now I just…” Pound started, pulling his hips back, before falling silent as he heard the door opening, and wincing as the light flicked on and blinded him.

“Pound?! Pinkie?! What are you doing?!” A very familiar filly’s voice called out in a near-panic, a flurried clop of trotting hooves growing quickly nearer, “Get off her Pound, or you’re gonna get her all preggers like you did Flurry and me!”

As his sight cleared after raising a foreleg to help rub the spots from his vision, Pound looked back towards the doorway, seeing just who he’d expected to. There, behind them, having been getting a very clear view of their nearly-touching, extremely aroused parts thanks to their flagged tails and their crotches facing the door, was Pumpkin Cake.

Pumpkin looked tired, as she always had since she’d hit the second month of her pregnancy, her swollen yellow belly quite visible especially as he looked at her from the front. He, as he did every time he saw that big mound carrying his foal, felt a burst of instinctive pride; feeling proud he’d done that to her, his seed planting itself into her womb and taking root; he’d passed on his genes, and she would birth his foal soon. The same he felt when he saw Flurry’s pregnant belly, too, equally as gravid with his rooted seed. “Uh…hi sis…” Pound said, giving her a sheepish smile at being caught red-hoofed atop another mare.

“What are you doing?!” Pumpkin asked again, a frown on her face, and clearly not really understanding the social implications of her brother, her mate, lover, and sire to her foal, mounting another mare. After all, she’d already shared him with Flurry before, so it wasn't a big deal to her. Instead, her nostrils flared as she picked up a specific scent. “She smells just like we did when you got us ‘preg-er-net’! You’re gonna make her ‘preggy-nant’ with a foal too, if you put your willy and colt-stuff in her filly…I mean her marehood!”

Being caught, and once more reminded of the potential consequences of proceeding as she’d planned, Pinkie just smiled at Pumpkin. “Oh, hi there birthday girl!” Pinkie said, getting a confused look from the filly as she clearly caught her off-guard, with her taking a step back, “Well, you got me! I was just about to give Poundie here a super-secret present!”

“What are you doing up anyways? You usually sleep all night!” Pound asked, a hint of venom in his voice, thinking that maybe his sister would go and get their parents, and he wouldn’t get to have his gift, “Just wanting to make it so I can’t get my special present?”

“No! I was…going potty...again. I have to go a lot, since our baby is pressing against my insides so much as it’s growing, and making me have to go pee so bad it even wakes me up sometimes!” Pumpkin said, her lower lip sticking out in a pout, “Mommy and Daddy didn’t tell me about needing to pee so much when I chose to keep our foal, just that it would be a lot of work and uncomfortable sometimes,” She shook her head softly, “Anyways, I heard you and Pinkie talking, so I decided to see if you were doing anything fun,” She pointed an accusatory hoof at her brother, “and I find out you’re trying to put a foal in Pinkie’s tummy, too!”

“Hey, she came in to my room, smelling all good and asking if I wanted to have ‘the sex’ with her! It’s not my fault!” Pound countered and, to Pinkie’s disappointment, dismounted her, facing his sister instead with his hard colthood still hanging beneath him.

"Well you're gonna get her pregnert!"

“Oh yeah?! Well I wouldn't want to so bad if you would just let me have se—”

“Foals!” Pinkie interrupted sharply, startling the two siblings, breaking their death glare at each other and making them look to her instead, “Like I told Pound, I’ll take care of it after we’re done here tonight. Don’t worry about foals or anything else,” Pinkie paused, an idea hatching just then, “and since you’re here, Pumpkin, you can get a special present too!”

After hearing Pinkie would ‘take care of it’ regarding a foal, Pumpkin instead thought of getting another present, her tail slowly swishing happily, “Really? What is it, what is it?!” Pumpkin asked excitedly, her anger at her brother completely forgotten just like that.

“Well, I can give you your present while Pound gets his, at the same time! As I told him, though, you gotta keep this a secret! After all, it’s your super-special birthday present from me!” Pinkie said, giving Pumpkin a wink of the eye that made her feel funny in her tummy. True, while she had originally only wanted Pound to help her with her heat, Pinkie certainly wouldn’t mind adding in another partner if it meant keeping her silence. Plus, she knew that giving these kinds of presents to mares was pretty fun, and tasty too, so surely it would be just as much so with a filly.

“OK!” Pumpkin said, giving her friend a big smile, “So, what did you want me to do?”

“Yay! Now, Poundie, just go ahead and climb on me like you were earlier, and Pumpkin, come here beside me,” Pinkie said, before laying flat on the ground as the filly did as she was told to, “OK, now climb over me, put your forehooves on your brother’s head, and just spread your hind legs so one is on either side of my head. I can show you more fun ways you can feel good with a filly too, instead of just how nature intended for you to get pleasure only from a colt's willy!”

“Well, Pound already licked me…down there before we had ‘the sex’ the first time. I was really nervous cuz when he did it with Flurry it hurt her, and her fillyhood bled a little. So, since he licked me and I got all big tingly, it made me all wet there, and it didn’t hurt me at all when he put his willy in me!” Pumpkin said and, as she recounted the sensations of her brother’s muzzle lapping away at her fillyhood, then feeling his colthood’s tip getting all big as it squirted a foal inside her, she felt her filly parts moistening in the present.

“Yeah, good lubrication is really, really important when you’re having sex, or it can hurt…sometimes baaadly...” Pinkie said, before getting a worried glance from Pound, “Oh, don’t worry, Poundie! I’m plenty wet! Just look at me!” Pinkie said, “and I’ll make sure to get you really wet too, Pumpkin!”

Pound did indeed look down at Pinkie’s slit, and saw her glistening marehood and ass were quite soaked, her clit winking slowly to boot, causing him to give a muffled breeding whinny at just the sight, his cock throbbing in tandem. “Yeah, see how much it wants you? Go ahead and get on top of me again and put your willy in me already!” Pinkie half-shouted, so close to relief, yet it was not quite in her grasp yet. Or rather, not quite inside of her yet.

Pumpkin watched as her little brother mounted over Pinkie again, practically lunging at the older mare with vigor, gripping around her stifles as his hips were already moving on their own. Pinkie gave an excited little squeal as she felt his flare poking her pussy, but always veering off over it and between her teats, or off to the side, with each thrust. The young colt was clearly overly eager to feel the pleasures of the flesh again, missing his mark every time in his excitement.

As she waited for Pound to get his colthood inside her, Pinkie meanwhile looked to Pumpkin, about to call her over, before her mouth gaped open and her eyes crossed. Pound, meanwhile, gave off a victorious, if quiet, breeding whinny as he penetrated Pinkie’s needy pussy to the hilt in one thrust, filling her all at once with each of his five inches, and immediately started thrusting away. While he wasn’t as filling as her toy was, or any of her previous partners had been, there was still something incredibly satisfying about the sheer vim and vigor that a colt put into everything, and clearly rutting a fertile pussy wasn’t an exception.

Pumpkin had been only watching so far how much her brother and Pinkie enjoyed themselves, but she squirmed her hind legs together as she’d started feeling a little needy as well, the thought of how it felt when Pound had first pounded her, and each time after, arousing her.

It’d been a while since they’d last had sex, with him sneaking into her room nearly every night after their first time together, before she’d basically cut him off, fearing they may hurt their child when her foal-belly had first started to show, and the fact she was always so tired at night. Now, she somewhat regretted that, thinking of how good Pound had felt inside her, thrusting away with the same passion he was now giving Pinkie, until he started squirting and warming inside her belly with his foal-cream. Now, though, she was going to get something at least, if Pinkie’s implications were what she thought.

“C-c’mere,” Pinkie managed to choke out, the pleasure of Pound’s medial ring so rapidly grinding over her fun-button with each thrust feeling so good that it was making her head feel light. What the little guy didn’t have in length or girth, he certainly made up for in tempo and gusto. “c-can’t let your little brother have all the fun, right birthday girl?”

As she was beckoned over, Pumpkin did as Pinkie had earlier instructed and slowly climbed on top of her, placing her fillyhood in front of the older mare’s muzzle and resting her forelegs and chin on Pound’s head for balance. He certainly didn’t seem to mind, too distracted by the incessant urge to thrust his hips into that slick, yielding warmth surrounding him to really notice much else. Pumpkin had a thought as she watched her brother rutting this mare like his life depended on it, hearing him panting so desperately to fuel his body with much-needed oxygen, hesitating to lower herself to press onto Pinkie’s muzzle. “B-but won’t it be hard for you to breathe if I push my filly-thingy against your nose?” Pumpkin asked, her tone worried.

“Oh, don’t worry about that! I’ll be just fine,” Pinkie immediately responded in her usual happy and excited tone, before giving a soft moan as Pound thrust into her hard again, “I-I’ll just tap you on the flank three times fast if I need to breathe. It’s not the first time I’ve done this!”

“Oh, OK!” Pumpkin responded, the relief clear in her tone. As long as the older mare knew what to do, she was comfortable. Pinkie gently pressed her hooves against Pumpkin’s rump, one on each cheek, getting a feel for the filly’s developing bottom. It was starting to fill out with the extra fat she’d been retaining for the foal, giving Pinkie quite a squishy hoofful to work with as she started to gently knead her buns. Meanwhile, she softly pulled the filly’s crotch towards her muzzle.

Pumpkin gave a quiet squeal at the first contact of Pinkie’s mouth pressing to her nether-lips in a kiss, feeling herself ‘wink’ for the first time that night, an extra-strong surge of sensation running through her body as her clit pressed against Pinkie's lips, causing her to shiver. She felt Pinkie’s tongue slide between those folds, before giving another quiet squeal and buck of her hips as it made contact with her clit. She could feel Pinkie’s larger muzzle being pressed against her alongside each thrust from her brother, feeling his head moving too as she gripped it between her forelegs, tingles starting to roll through her body as her needs were being tended to after so long without. She’d had a growing desire to let Pound mount her, her pregnancy hormones urging her to go to her stallion and sate her needs with him, but the fear of hurting their precious offspring outweighed her desires. She'd never even considered oral as a solution.

Pinkie gave a quiet moan as she tasted the filly’s fluids, with them so light compared to a mature mare’s, so much more sweet and far less musky. She enjoyed each lap over the small slit, feeling Pumpkin gently trembling every time she lapped against her petite pleasure-button. Her tongue felt so big compared to Pumpkin's pussy, with this being the first filly she’d ever eaten out before. She meanwhile felt as Pound lived up to his namesake and ferally bred her like the mare in heat she was, feeling him throbbing within her as she squeezed down on him. While his size wasn’t quite reaching the depth that her body craved, which she knew a full-grown stallion could, the rapid thrusts he was giving were all but buzzing her clit with his ring. That, added to her increased sensitivity from her estrus as she squeezed down upon the hard maleness inside her, was more than simulating enough for her to feel her pleasure rising up, a tightness starting in her lower belly and winding even tighter with each thrust.

“You’re doing so good, Pound! Keep going! M-making me, ah, all squeezy and slippery inside!” Pinkie encouraged the colt, desiring to be filled with his young, virile seed. She felt so good, a male’s firmness within her, something to squeeze down on as it pistoned inside her. His cock was warm unlike her cooler, hot flesh fed with pulsing blood instead of a glorified chilled, saline-filled dildo. Pound had the exact thing her body craved while in heat, and Pinkie was all too happy to receive his willy into her, again and again, as many times as he would give it to her. Tingles ran through her with each squeeze down on the colt’s diminutive willy, but in her needy state, it was more than enough, especially as his ring continued to grind into her swollen, winking clit, and his flare’s ridge grazed her g-spot with each thrust.

Pinkie was so lost in the enjoyable sensation given to her by Pound she had totally spaced out, so much so that Pumpkin, as the licks over her slit stopped so Pinkie could speak and pant, complained in her disappointment at the sudden lack of pleasure. “Get back to making me feel good too, pleeeease!” Pumpkin demanded in an almost whining tone, her hips pushing back against Pinkie’s muzzle, wetting her nose with her now-profuse fluids.

“O-Oh, whoopsie-doodle, s-sorry…Poundie-Wowndie’s making Pinkie-Winkie’s inside p-parts feel super-de-duperdy awesome!” Pinkie mumbled in a distracted tone, before resuming her licks between the younger mare’s slick folds, hearing her give a quiet ‘ah’ and feeling her wink and jerk her hips towards her as she plunged her comparatively-thick tongue inside her entrance for the first time. Pinkie continued to enjoy the mellow, sweet flavors of the filly’s arousal as she steadily provided her with ever more of them as she lapped away at her honeypot, as well as the quiet sounds of pleasure she coaxed from the filly, and tight squeezes on her tongue of Pumpkin’s pre-climactic passage.

Pound, meanwhile, was totally lost to his instincts, feeling each squeeze that the more experienced mare’s walls made on him, and responding to them by thrusting as deep into her as he could reach. She was certainly a lot stronger inside than his sister or Flurry had been, her inner muscles rippling along his length with a skill borne of experience, instead of raw instinct as theirs had been. It was all he could do to keep thrusting wildly into Pinkie as hard as possible. He was only giving haphazardous thrusts at this point, unable to restrain himself from the wild mating frenzy she’d incited him into as she squeeze-squeeze-squeezed around him so perfectly each time he plunged in her warmth as far as he could, only for her to loosen and let him leave, before squeeeeezing down on him and pulling him right back deep inside herself all over again as he thrust in once more.

Pumpkin was meanwhile watching as Pound mated Pinkie with such a feral fervor, hearing their quiet whinnies, nickers, and moans as he bred her like an alpha stallion of yore on the plains, mounted on his mate of choice and rutting her full of his foals. She could feel each jarring rut of his hilting, could feel his head quivering beneath her hooves along with the rest of his body as Pinkie clearly gave him the time of his life.

She certainly couldn’t complain, though, as Pumpkin felt Pinkie’s equally-experienced tongue dancing either within her filly parts, over her clit, or sometimes, somehow, both at once. It was an experience far surpassing the sloppy licks Pound had given her to get her wet before their first time having sex. It even went beyond when Flurry had suckled on her teats while she was being eaten out by him, or as she did it as she had been bred. Pinkie’s ministrations felt simply divine in comparison.

“Yes, yes Poundie! Keep pounding my Pinkie-pussy!” Pinkie half-shouted as she could feel her own climax nearing, pausing her feast on the filly’s pussy so her words wouldn’t be muffled by the marehood she so well took care of, hearing Pumpkin whimper and push back against her even in her brief absence. As the colt rutted her like a feral stallion, his only intent – his sole goal left in the wake of her pheromones' assault on his senses, and her talented vaginal muscles on his colthood – being to breed this fertile, willing mare whose body was nonverbally begging for his foal until he'd granted her desires.

It wasn’t long before the trio’s motions grew faster to an ever-rising tempo, Pumpkin’s muscles starting to squeeze down on Pinkie’s thrusting tongue desperately as the thunderstorm of pleasure rumbling within her lower tummy threatened to erupt. She felt the sensations rising to a familiar climax she’d been growing ever more intimate with as she and Pound had started having sex together frequently. “P-Pinkie! I f-feel the b-big tingles coming soon!” Pumpkin announced, her hind legs softly bucking as the sensations grew stronger still, her inner muscles quivering, feeling like a spring tightening in her belly with each lick.

As Pound tensed up more on every thrust, each pull out growing more shallow, Pumpkin watched as ‘it’ happened to him, as she felt her own insides purring with delight. She saw as his face morphed into one of sheer bliss, his jaw hanging open as he gripped tightly around Pinkie’s stifles, delivering a series of the most brutal of final thrusts he could manage into her.

Pound was feeling a growing need to stay deep within his fertile mare, to make the whole goal of their mating get as far inside her as he could. “P-Pinkie…I’m…it’s gonna...I’m gonna…i-in you…then you’re gon'…have…m-my f-foooooal…” Pound managed to stammer out, only to feel Pinkie squeeze down on him inside her tightly, with his colt shaft fitting perfectly between Pinkie’s hungry hips. She was all but trapping him inside her as her hind legs wrapped around his haunches, pulling him as far into her as she could, feeling his balls tensing up against him as he had gotten right to the verge of cumming.

“G-go ahead, it’s OK. L-like I told you, I’ll take care of it…” Pinkie said, feeling as Pound flared up inside her and spread her innards just that little bit more, his throbbing feeling so intimate as she squeezed down firmly on his trapped member, even able to feel his pounding heart through his colthood. She then started squeezing down rhythmically on her entombed prize, all but milking him for his young seed.

“P-Pinkieeeee~!” Pound squealed at the added pleasurable assault of sensations on his encased shaft, trying to thrust as his instincts demanded, but held so tightly against and inside Pinkie that he couldn’t move his hips at all. Instead, he let out a cross between a breeding whinny and a whine as he felt his colthood stiffen up inside her that little bit more, his flare swelling to its maximum size, with the tension behind his willy at an all-time high…before it suddenly snapped.

Pumpkin watched as Pound passed the point of no return, looking deeply into the eyes of her foal’s sire as he teetered on the brink of quite possibly creating life again with a third fertile mare. She could read the unfathomable pleasure he was feeling in them, could feel him quivering as he fruitlessly tried to hump against Pinkie on instinct, watching him experience his penultimate bliss as she felt her own climax on the edge. Then, with Pinkie taking her small clit into her mouth, and gently suckling on it as she gave a moan of pleasure and vibrated it, Pumpkin felt that tension in her own lower belly release.

Pinkie could feel Pumpkin quivering in her grasp as she clearly reached her orgasm, feeling her clitoris winking sporadically against her muzzle as she squirted all over her face, her pregnant belly grinding along her chin with each jerk of her hips. She focused on the feeling of a filly splattering her face with her liquid pleasure, on her foal-filled belly grinding against her chin, and simultaneously a colt on the brink of unloading inside her, especially since his swollen flare getting so hard was making her insides feel so squishy and melty and…

As she clearly felt the first shot of Pound’s cum being powerfully ejaculated against her walls, Pinkie squealed when she felt herself tightly clamp down on the colt’s stallionhood as she came hard. She was tipped over into an extremely intense orgasm on reflex by the feeling of his warm colt-goo spurting inside her heated passage, and the rhythmic throbs of his hardness within her. Her body’s rippling contractions from his base to his swollen flare were doing their very best to work loose every drop of semen this virile colt could give as she squirted her mare-cum all over his throbbing balls and sheath; working to milk him dry and give her the best chances of having him sire a child to her, as her body so demanded to happen. To conceive the foal which her estrus made her crave on a most primal level. Working so hard to make her a mother, and pass their genes on to the next generation.

Pumpkin and Pound looked into each other’s eyes lovingly as they came together, witnessing the sheer pleasure the other felt before, on some deep instinct, they lunged forward towards their twin, their lips meeting in a passionate kiss. Their hips meanwhile jerked against and inside the mare who had brought about such pleasure to them, Pound’s into Pinkie’s pussy and Pumpkin’s grinding against her muzzle as she squirted her femme-cum all over her face.

Pound was completely lost in the sensations of filling another receptive mare with his seed, feeling his willy involuntarily pulse-pulse-pulsing away inside her. Trapped within as she squeezed and squeezed on him, lost in his moment of sheer ecstasy as he held the gaze and lips of the pony closest in the world to him, the one who was conceived alongside him; the one born at the same time as him, with whom he’d shared his second time, and had created a new life with. His sister, his twin. His mate, his lover, and the unintended carrier of his child.

The three ponies quivered there in a pile of bliss as they came together, trembling and squeezing and spurting all over and into each other. Pinkie was meanwhile making a quiet, constant ‘eeeeeeeee’ as she clamped down over and over again on her male, grinding her hips against him on reflex. Pound and Pumpkin were still locked in a passionate kiss, having pulled each other closer into an embrace as they climaxed, and their hips rhythmically rocked against the pink mare beneath them, through whom they shared their orgasms.

They held together like that for a good while, as Pound’s squirts into Pinkie’s fertile passage started as big ones every half-second, before steadily growing smaller until he was just shooting blanks inside her a couple seconds apart. A few moments later, drained dry by his orgasming mare's thirsty canal, he finally slid down Pumpkin’s underbarrel, unceremoniously ending the hug with his sister as he collapsed onto Pinkie.

Pound, as he started calming down from the exhausting and simultaneously intensely pleasurable experience, looked at Pumpkin’s gravid belly, feeling a deep pride for being the cause of it. He then met eyes with his sister, seeing his mare in bliss too, feeling some relief that she had experienced just as much joy as he had from the looks of her. He then reached out and gently pressed the frog of his hoof to the vessel of their child and met her eyes again, each sharing a soft smile before gently rubbing their muzzles together.

Pinkie meanwhile felt…delightfully full, letting out a pleasured trill as she hiked and kept her hips up, feeling as Pound’s rather generous seminal donation slid thickly deeper inside her every time she squeezed down with her vaginal muscles, ending up well beyond where his thickened flare lay, likely reaching her cervix and past it into her fertile womb. She’d never experienced raw sex while in estrus before, and this was a first for her too in a way; the way her heat felt so completely done as Pound filled her up, and the gooey, full feeling of his semen in her at her peak of fertility. The mere sensation of Pound’s ejaculate inside of her fertile foal-tunnel felt better than any orgasm she’d had before. The experience of being bred properly, her passage and womb filled by a virile male, was an utter contentment that little else could compare to, and which she luxuriated in for a while.

“Whoo, that was a doozy!” Pinkie said, sounding uncharacteristically drained, her mane even looking a bit less poofy and more pale than usual. As she relaxed in her afterglow, still feeling Pound’s member and flare containing his genetic payload within her, she felt the burning and itching of her estrus quelled thanks to the male hormones in his semen, the incessant urge to find a stallion to inseminate her now being slaked. “Thanks Poundie, you were super-awesomely-amazing! You made me feel all warm and gooey inside, and that nasty, bad, hot feeling in my belly totally feels all better now!”

Pinkie loosened her grip on Pound’s croup with her hind legs as her whole body relaxed. She felt Pound’s softened member sliding from her in a rather satisfying way, followed by a bit of his cum drooling out and onto her asshole. Pumpkin also climbed off Pinkie, her forehooves landing with two soft clops onto the floor, and followed by two more from her hindlegs. The latter shook a bit as she put weight on them, still a little weak because of her strong orgasm. “So, how did you two like your bonus birthday presents?” Pinkie asked, looking to her young lovers.

Both twins looked at Pinkie, then each other, giving their sibling a soft smile. “We loved them, thanks!” both exclaimed, after climbing down from Pinkie, before each snuggled up to either side of the mare on the floor.

“So, um what will happen with you, Pinkie? I put all my colt-milk in you, so does that mean you’re gonna have a foal from me too, like Pumpkin and Flurry Heart are?”

“Like I said before, don’t worry about it. I’ll take care of it, I promise,” Pinkie replied, giving a little smile.

Since her and Pound usually went several times in a row, that first orgasm was almost like a teaser to Pumpkin, and she wanted to feel a really good one now, which she only ever got when Pound's colthood was inside her as she got all squeezy. She thought about hurting their foal again though, and figured Pinkie could set the record straight on that. She'd know, since she was a grown-up mare after all! "Um, Pinkie? Is it OK for a preggernet mare or filly to...have the sex? Like, with a boy putting his willy in their 'vag-eye-nah'?"

Pinkie was slightly taken off-guard by the question but, as she saw Pumpkin's wanting expression as she longingly looked over to Pound, she smiled. "Sure! As long as you don't put too much pressure on your foal-bump and he doesn't shake you around a whole lot, or go too deep or rough, I'm sure you can totally have sex with a foal on board! I mean, same as when you weren't pregnant: if it starts hurting or feeling wrong, tell him to stop!"

Pumpkin beamed after getting confirmation that their child wouldn't get hurt by Pound putting his colthood in her again, looking up in thanks at Pinkie, getting an equally beaming smile back from her in return. “Hey, Pound? Want a turn with me now? Pinkie licking me felt good and all, but…I wanna feel your colt-goo inside me again!” Pumpkin asked after a while of resting, standing up and flagging her orange tail aside in invitation. Within moments, the colt was once more hard as a rock at the sight of his young mare so wanting, so wet and needy for him.

“Ah, young love…” Pinkie cooed as she started rubbing herself at the sight of Pound mounting his sister, his virile cum being a rather good lubricant as she worked herself to her second orgasm, before hearing a shared moan from both twins as he penetrated her.

"U-um...Pinkie? Can...can I try licking you, like you did me? It felt really good for me, so...mmm...I kinda...wanna..." Pumpkin said, before rolling her head back and moaning as Pound started to really get into his thrusts, "...w-wanna make you feel good too!"

"Sure, but...Pound’s 'colt-milk' is still there. It may taste kinda nasty to you." Pinkie warned, but was hardly wanting to turn down getting eaten out after sex, even if it was from a filly.

"I...I've tried it before...'s not so bad..." Pumpkin said, seeing a little smile from Pinkie as she scooched up to the breeding siblings, putting her crotch right in front of the filly's nose, with Pumpkin’s nostrils flaring at the smell of semen, of male; the scent of her mate inside this other mare, combined with Pinkie's own fertile musk.

"O-oooh~..." Pinkie moaned as she felt Pumpkin’s small tongue licked over her semen-slicked slit the first time, prompting a wink from her clit, and quickly being followed by more licks, and winks, "...coming up here was best idea ever!"

~ ~ ~

"Maybe going up there that night wasn't the best idea ever after all...”

Pinkie looked at the potion she’d gotten from Twilight with some reticence. Next to it was a cup of her own urine that was yet to be added it to the mix. Sure, she’d known about the possible consequences of having sex with Pound that night, but had been too overwhelmed by her breeding instincts to resist. Sure, she'd gotten distracted and hadn’t taken any foal control after he’d creamed in her unprotected womb twice that night, cumming in her a second time after he'd finished in his sister and they'd had round two in pony-style, him mounting her as she laid over the bed, her legs spread wide and belly flat to the bed. Sure, it was well over a month since then, she was feeling rather sick in the morning sometimes, and she had missed her previous estrus. But maybe she wasn’t…

Seeing no point in hesitating anymore, Pinkie lifted the cup and poured her pee into the other cup of the pregnancy test potion, watching it fizz for a moment, before turning into a light-blue pair of wings, and then a hot-pink hoof-mark. “Well,” Pinkie said, “Guess Poundie’s getting another couple presents too in about ten more months. A pegasus son…and an earth pony daughter. Guess it makes sense, since we’re both twins, and they run in both our families...” She gently rested her hoof on her lightly-swollen lower belly, right over her womb. Her twin-filled womb.

It turned out she wasn’t lying to Pound that day. Since his seed had taken, she would indeed be 'taking care of it'. Taking very good care of the foals he had given her.

Meanwhile, Pinkie was considering how to tell Mr. and Mrs. Cake that they’d soon be having their third and forth grandfoals, all with their colt son as their sire, and within the same year, with two of them by a grown mare. How to tell Pound he was going to be a father again too. “Well, I’ve certainly got a lot of explaining to do, if I wanna keep them,” Pinkie said, before giving a little smile at the thought of having twin foals of her own, “I’ll figure something out. I mean, it’s not like it’s illegal for a mare to have foals with a colt, just...kinda frowned upon.”

As she looked into the swirling pink liquid, Pinkie smiled.

After all, if the damage was already done, maybe she could give Pound and Pumpkin another 'present' again soon.