Foaldo

Though Big Macintosh and Braeburn had been boning since they were blank flanks, it’d never gotten out beyond rumors. Of course given how many rumors there were about incest in the Apple family, a rumor about cousins was the least of it, so their family assumed it was just as fake a rumor as any of the other false ones. Granted, Braeburn making a trip to Sweet Apple Acres on his birthday probably didn’t help the rumor, but Big Mac had a big surprise for him, and this time it wasn’t just his dick.

Braeburn had expressed to Mac some time ago that he’d love to feel something bigger than Mac inside him, which was no small feat. For some reason, Braeburn had latched onto the idea of Mac’s little sister Apple Bloom being the bigger thing he’d like forced into his behind. Despite being completely gay otherwise, he’d developed a specific hunger for the filly when watching her around the farm. After watching his poor cousin stare at her drooling for hours during the last visit, Mac had decided to do something about his lover’s need.

Of course normally this wouldn’t be possible as she was just a little too big compared to the largest things they’d managed to shove into Braeburn. But Mac had thought of a solution for that. Bloom regularly visited Zecora for potion training, but never got any better at it, leading to a rumor about them as well. If that were even a little true, Zecora would be plenty ‘familiar’ with Bloom’s body size, so Mac went to her. Though he had to pay quite a bit and promise not to reveal his source, she gave him a stretchy potion that would allow Bloom to compress and stretch enough to safely but snugly fit inside a pony’s posterior, at least one used to taking large objects.

He assured Zecora that it would be with Applebloom's permission. He lied. He shouldn't need her permission when asking her to help out a family member in need.

Mac did consider if he should ask Apple Bloom beforehoof at least, but had to admit surprising his own sister with a plan to ram her into his coltfriend’s tailhole was rather arousing by itself. Besides, she knew how important it was to help family, so he could be reasonably sure she’d never tell on him. And if anything, a rumor that he shoved his sister into his cousin’s ass would be so absurd that it’d cause people to put less credence in the other rumors about them. He wasn’t sure it was even rape since she’d be more of a toy than a participant; his rationalization was clearly flawless.

Braeburn had been overjoyed when he found out Mac’s plan, and as they rushed to Bloom’s room to nab her. Mac had trouble keeping up with the gleeful sprinting Braeburn, but both of their shafts were throbbing so hard that it’s a wonder they didn’t pass out from blood loss. She was easy enough to grab while sleeping, and she didn’t wake up atop her brother’s back until they were almost at the least-used barn where they usually did their lewd deeds.

“Wha?” Bloom said as she awoke with her brother rushing her to the barn. “Where we goin? Did somethin happen?”

“Oh something is gonna happen, cuz!” Braeburn carried the potion and the biggest grin Mac had ever seen on his face.

“Just need some help with something is all, sis,” Mac assured her, grinning almost as much.

“Uh, sure,” Bloom looked unsure as their creepy smiles were more often associated with free candy wagons than family, but nodded. She looked even less sure when they rushed into a dimly-lit barn and barred the door behind them. Even if she’d not believed them before, she’d definitely heard rumors involving this barn.

“W-wait… what kinda help you need exac-” Bloom started, only to squeak as her brother unceremoniously dropped her off his back. She then squealed when Braeburn grabbed her head and put a potion bottle to her muzzle, Mac forcing it open to forcefully dump it inside and make her swallow. Braeburn rammed the bottle tip directly into her throat to force her to guzzle it, and her panic quickly started to rise.

“Should we tie her up?” Mac asked, seeing no more reason to beat around the bush now that she couldn’t escape. Now they had to finish after all, to make sure she was too ashamed by the act to tell on them.

“Nah, I wanna feel her squirm!” Braeburn was shivering now with excitement, words breathy as his chest heaved. “I can’t believe we’re really doin’ this! It’s the best birthday gift ah could imagine! Um... just careful she doesn't touch me with 'er puss. I don't wanna do anything... straight."

“That’s disgustin’!” Bloom complained, being a drama queen about being drugged by her family, but had no idea how disgusting it would get. “Oh mah gah are yer dicks out? Lemme go! Ah don’t wanna be part of this!” She’d seen enough of their livestock with their dicks out to know where those went, and wanted no part of it.

She was dropped onto the floor again, and immediately darted for the door, as pointless as it was since Big Mac had moved the latch to make sure it was too high for a foal to reach. Big Mac easily grabbed her tail before she got too far and she spent some time running in place.

“Toys don’t have to wanna be part of it,” Braeburn licked his lips, still breathing heavily. “Maybe we should gag it until it quiets down… ah didn’t think to bring one though.”

“Oh I gotta gag right ‘ere between mah legs, eyup,” Mac yanked Bloom back between them. “Though first…”

Bloom shrieked as her big brother’s shaft smacked her face, laying across her muzzle, his musky scent invading her young nostrils. Despite the dangers of sticking it into an unwilling participants muzzle, he was confident that she wouldn’t hurt family, and even if she would, his thick shaft wouldn’t take too much damage from a foal’s teeth.

“First time ta lube up this foaldo!” Braeburn said. He talked about Bloom rather than at her now, because as far as both of them were concerned, she was a plaything rather than a pony during this.

Braeburn eagerly pulled out a large barrel, which Bloom recognized as an industrial-sized container of the lubrication they used for livestock breeding. It was very useful when a female they needed to breed or artificially inseminate was dry or not in the mood, and it was also the favorite choice for the gayest of stallions.

But of course Bloom wasn’t lubed up in that fashion. Instead, the two stallions picked her up in their hooves, working together to dunk her whole body in the open barrel. Her panicked shrieking was cut off as she sputtered and choked, her whole body and head held under a few long seconds to rub their hooves all over her, getting the slippery substance matted into her fur. Once it clung to her, it’d take quite a while to come off.

Bloom continued a more gurgly shrieking as she was allowed to surface, thrown roughly back to the barn floor like the object that she was. When Big Mac put his dick to her face again, she tried to push it away in a panic only for her hooves to glide off the sides. Her attempts did little more than stroke him and lube him up a bit as well.

Mac grabbed her midsection, squeezing her hard to keep the grip as she wheezed, then pushed his tip against her muzzle the next time she opened it to squeal. He wasn’t worried about her biting down, since she’d been raised to not hurt family. Mac had too, but clearly getting off was an acceptable exception, and they wouldn’t permanently damage her.

Braeburn giggled with enthusiasm, much like he did when Mac took him to Rarity’s underground sex shop for her selection of massive dildos. Bloom was slightly larger than those after all. He turned his eager ass around, spreading his hind legs and flagging his tail upwards.

Bloom continued to sputter and choke from her preparations only to have Mac’s now-lubricated cock shoved against her muzzle. Her jaw was forced open widely just from the tip, the blunt end pushing against her impossibly tight throat. Even though she didn’t try to outright bite him, his girth made it impossible not to feel her teeth, but somehow that only made it better. Trying to back away just resulted in her backing into one of Braeburn’s legs, eliciting a moan from her cousin at the touch of her drenched body against him.

Grasping Bloom in both hooves, he picked her up off the floor. He wedged his tip more securely in her gagging throat, holding her with one hoof as the other pulled one of her legs to Braeburn’s pucker, which flexed hungrily at the pressure.

When Bloom frantically tried to pull her leg away, Mac bent it back at the knee, eliciting a delightful squeal from the foal that shivered up through his shaft. The potion kept her leg from breaking, but it still hurt like crazy, so she ceased her resistance soon enough, the room filling with her titillating despair as she started to cry around the pole trying to invade her throat.

Braeburn couldn’t care less if she cried or hurt, because he couldn’t believe how turned on his was from this. He pressed his rear back more as Mac once again pressed her against him, this time pushing both of her hind hooves to his pucker at once. Two filly hooves weren’t even as girthy as Mac’s cock, so they pushed in easily enough. Bloom’s stomach heaved at the feel of the orifice slipping around her hooves, but the cork in her throat ensured she didn't vomit on the floor of the barn.

Though Bloom was fairly docile for fear of having her legs twisted again, she still writhed pleasantly, her hooves moving apart slightly as if to make it harder to push her in. That only served to allow the enticing aroma of Braeburn’s rectum upwards, fanned further by her twitching tail, allowing Mac to get a great big whiff of it.

Mac hadn’t been sold 100% on how fun involuntarily forcing one family member into another’s exit would be, until now at least. Bloom whimpered as Mac’s plug pulsed harder with arousal, her jaw creaking as it barely avoided popping out of joint. Mac went from somewhat reluctant to desperate to shove her deeper inside; he’d get her in there at all costs! He felt her throat convulsing against his spire, realizing that she was attempting to vomit, and her disgusted humiliation drove him further. If she was this sickened with just her hooves inside, think of what it’d be like for her when she was fully encased in ass flesh!

His intense desire to ram her into his cousin’s asshole overrode any concern for her safety, so it was a good thing that she had that potion in her and wasn’t able to throw it up. Though the effects of the potion weren’t largely visible until he rammed her with all his full strength, the same massive power that could have downed an average tree in a single buck.

Her throat gave to his prodding finally, her front legs flailing as her neck stretched out from the width, stuffing her sickness back into her belly. His strokes didn’t stop, moving back until he was still barely encased in her throat, then ramming back fully into her gut, body bloating all the way to her belly. If the other lewdness wasn’t enough, throat-raping his underage sister definitely sent it beyond arousing.

At the same time, her legs pushed in easily up to her hips, which compressed visibly when his widening behind slowly slid further up her body like a snake swallowing its prey. Mac never realized how incredibly hot she was until he saw the degraded twitching of those hips as she sank deeper.

Braeburn got even more of a royal treatment though, because Bloom couldn’t help but buck her tiny legs within him. The slimy fluid that covered her kept her from getting any leverage, not to mention that her limbs bent more than usual due to the spell. Braeburn’s keister had only ever given passage to his shit and Mac’s wang, but the more of the foal slid into him, the more he knew that Bloom belonged there just as much, maybe more.

Though the potion somehow managed to get enough air to Bloom to keep her conscious, the filly felt like she was suffocating, and started to think that she might not survive the experience. Her panic swelled up further, front legs lashing out but only managing to pleasantly juggle her brother’s hefty ball sack. Her flexible body was pushed outward by the thick dick even as it was compressed by Braeburn’s ass on the other side, finally meeting in the middle. Mac was effectively fucking Braeburn with Bloom as his condom now as her body was compressed more thinly.

She stung all over, more and more as her meat and organs were condensed. Her lungs could only take tiny breaths, lending to the feeling of asphyxiation as her face started to turn blue. However all that physical discomfort was drowned out further by the pure disgrace. Two of the ponies she trusted most were defiling her in equally grotesque manners, leaving her nothing but a sobbing well-stretched mess between them. To them she was just a long slab of meat with holes in it, the only purpose of her being alive at all was so she could squirm to make her distress more arousing for them.

Usually Big Mac couldn’t have gotten any deeper without fatally stirring up Bloom’s guts, but the potion did its job well enough that he pushed into her throat past the ridge and almost to his sack, close enough that each powerful shove smacking her distended neck with his heavy balls, each almost the same size as her head. He clenched his teeth as he felt her body compress more, Braeburn’s ass moving up around her waist and moving over her chest. The combination of Mac and Bloom’s body were more than Braeburn intended to take, but he didn’t seem to mind at all.

Braeburn was so into it though that he barely even registered that Mac’s dick was part of the stretch. All he knew is that his own bowels felt heavenly as her distorted body pushed deeper inside. He couldn’t believe how much, even more than he imagined it would. It was like destiny, like his rear was created to perfectly fit Bloom. Not just any foal, only Bloom would do from now on.

Mac looked down at Applebloom, who looked back up at him with pleading eyes. The nausea on her pleading face was delightful, mixed with an abject terror that showed she really expected to die from this, but Mac would trust Zecora’s assurance that she had well over a 40% chance of surviving it.

It was so very wrong to see his favorite asshole stretched all the way up to her neck as Braeburn’s body bloated from the penetration, her form twisted inside him uncomfortably to fit within his curving digestive track. She continued to struggle, nothing but her head and front hooves outside now as she gagged violently on the dick.

As he went deeper though, he didn’t seem to get quite as far into her body with his cock, getting squeezed out by the intense pressure within. Seeing the ass flex made him think more about what butts were for, and the more he thought about it the more sinful and arousing this act felt. He couldn’t imagine why it took him this long to start raping his little sister, but she could be sure he’d never stop now. In fact when she got big enough that Braeburn couldn’t fit her anymore, maybe he’d consider borrowing one of Trixie’s manticores to fit her into one of their asses instead.

But as for Braeburn, he was now certain that the filly belonged in his ass more than anywhere else. It never even occurred to him that she might ever be too big, because he’d use any dark magic or potion he could to make sure she always did. It wasn’t just that it was a foal, but that it was Bloom herself. He couldn’t himself explain his obsession with her, but he knew that even if he thought she was too big and he might die from it, he’d still do it just to feel her inside him one more time.

Finally Bloom’s chin pushed against Braeburn’s pucker as only head head remained outside. Mac only needed the impact of his own hips to force her deeper, but even with that it was slow going as tightly packed as she was. She could feel her tremble against him still, looking down at her pleading wet eyes. The abject horror of what was happening was clear, it was so very wrong, but every second of looking at it just made Mac want to drive his hips harder.

Without the potion, he might very well have broken her neck with how hard he slammed into her now. As the rest of her head popped inside, fully immersing her in the stinking flesh within, Braeburn’s eyes rolled back in a seizure of pleasure. Feeling the perfect ass-object snap into place within him, he couldn’t hold himself a second longer, and exploded a thick stream of seed onto the barn floor beneath him.

Mac had to hold Braeburn more tightly as the floor became slippery beneath them, but groaned as the intense ripples within him translated right through Applebloom and into his cock. Bloom was still going deeper, sucked in by the eager hole, and Mac exploded himself just as her muzzle was about to be pulled completely off his shaft. He felt her desperate breathing before her muzzle was flooded with her own brother’s seed, gagging violently as she was asphyxiated by his thick spunk.

He’d exploded in his cousin and lover hundreds of time, but this was the most intense ever. Mac began to realize as Braeburn had what a perfect little foaldo his sister had. It was a pity that he hadn’t realized this earlier, because he could have helped her get her cutie mark in it.

Bloom struggled until her suffocation caused her to weaken. Though she had accepted her own demise at that point, Braeburn relaxed as well when both males were done getting off with their new toy. When Big Mac withdrew from Braeburn’s gaping ass and a waterfall of fresh seed splattered down his hind legs onto the floor, Bloom found herself sliding free.

She gasped for fresher air as her muzzle poked back out. The thick lubrication still stuck to her body, even if it’d adopted a browner shade at this point, and her body began to squeeze out much faster than it’d squeezed in. The sobbing foal plopped into the floor like the turd she was, laying limp and seeming to just hope that it was all over.

“That was incredible!” Braeburn panted. “Time for yer ass too?”

“Better believe it!” Mac grinned. “Push ‘er in head-first this time. I ate enough gassy food earlier she can probably still breathe.”

“What, no!” Bloom gagged desperately. “Why would you think ah’d be okay breathin’-”

Mac turned around, stepping on their toy’s muzzle to silence her when she rudely interrupted their conversation. Clearly the school had poisoned her mind with accurate biology lessons.

“Well okay,” panted Braeburn. “Just don’t expect me to touch its… filly hole.” He said as if afraid to say the actual forbidden word. “Ya know as perfect as it is for my ass, it’s too bad this toy isn’t colt-shaped instead of filly-shaped.”

“It’s just a toy,” Mac shrugged. “Just stay in the hole you like either way, but get ‘er in mah exit!”

“Wait, wait!” Bloom said again as Breaburn picked up her weakened body and dunked her into the lubrication again. “Ah feel different, ah think maybe the potion is wearing of-” Her words were stopped again, this time by gurgling sounds as her head went under the fluid again.

Mac grinned, bracing himself and spreading his legs wide as Braeburn pulled their toy back out of the fluid, freshly lubricated over the layer of brown sticky lubrication beneath. She sobbed anew as Braeburn sat up on his haunches and nestled his still solid shaft against her tailhole, very careful not to slip and touch the more grotesque and unnatural hole beneath it.

“Ah dun wanna die in mah brother’s asshole!” Bloom complained like a little brat as Braeburn carefully lined her up to stare Mac in the pucker. Mac was already shivering just at the sound of her crying behind him, both surprised and delighted at how arousing her despair was as she pleasured them through her torment.

Bloom gave up the begging as her muzzle was pushed firmly against him, but didn’t stop her struggling limbs as her hooves slipped about on Mac’s behind to try to push herself away from him. She tried kicking at his sack too, but her puny foal hooves just served to arouse him further, his ass tensing and relaxing like a throat swallowing at her.

Her crying was muffled when Braeburn mounted up his lover and shoved her face-first inside. Luckily for her, the potions effects didn’t wear off completely, so her face compressed enough that she was still able to get a bit of air to stay conscious. Or maybe that was unlucky?

Mac’s asshole was larger than Braeburn’s, and might could have forced in Bloom even without the potion, but that didn’t stop him from immediately understanding Braeburn’s strange obsession as his ring began to stretch around her face. He pushed backwards against Braeburn, wanting nothing more than to both feel what he’d felt and to shame his precious sister more. She’d never forget this, and his mere presence would remind her of the demeaning experience, making her a delight to be around.

Since she went in head-first, Mac got a series of shivers from her sobbing that Braeburn hadn’t, feeling more like a vibrating toy. His anus snapped tightly around her throat, then once again forced open slowly as it stretched for her shoulders.

Bloom’s tailhole was far harder to pry open than her muzzle had been of course, and to this point Braeburn still hadn’t properly penetrated the delicious cake of her underage ass. When he finally broke that threshold, he nearly passed out himself with bliss from the impossible clamp of her behind around him. Who could have imagined that she’d feel as perfect inside as she did inside him?

She was less enthused about penis piercing her posterior. Her somewhat organized kicking became spasms, all four legs thrashing about, her whole body convulsing visibly. She somehow managed to get enough air in her lungs to scream, the muffled shriek causing Big Mac to moan intensely as well, his whole body shaking as his legs almost gave out from bliss.

There was no mercy though; she was only a plaything after all. Braeburn only pounded harder, grasping her body to help shove her deeper as the warmth spread down over her shoulders and her front legs started to be pinned to her sides. Now that she’d passed over a wider part of her body, she slid in much more easily, her squalling head pushed around the bend as her body went deeper.

“It complains a lot,” Braeburn commented. “It should be thankful it still has its virginity, or at least one of them.”

“Well not gonna take care of that mahself,” panted Mac. “Though maybe ah’ll find a straight stallion willing to fuck it into a mare’s ass later.” If only to make sure to keep piling on the humiliation.

Somehow Braeburn got most of his cock inside the foal’s hole, enough stretchiness remaining to sheath him. Once he ran out of dick, hips hips bounded harder as his balls slapped her dry unwilling puss. She was shoved in more with each movement, all the way to her hips.

One would have thought that once they got to her hips, it’d be even easier to go over the final stretch, but it seemed the potion was wearing off faster now. Braeburn had to renew his efforts, with Mac pressing back hard in return, sweaty bodies forcing their way closer with every ounce of their strength. Both the intense pressure within and the dampened effect began to slowly push Braeburn from her asshole as well.

But they were determined not to stop. His little doll belonged inside a well-stretched digestive tract, and they’d waste no energy forcing her into another. They’d definitely have to buy those potions by the 12-pack next time, maybe even pass her around ass to ass at the next Apple family reunion.

Bloom renewed her begging, though too muffled to hear, as she felt the potion wearing off more. All that was sticking out of her brother now was her flailing hind legs as Braeburn simultaneously pumped her and her brother’s ass.

Somehow she was still moving and didn’t seem to be suffocating entirely, so maybe what Mac said about being a bit gassy was working. Though having to breathe in the stench from within didn’t help the indignity of it all, the foal’s mortification at what she was being forced to do more intense than the pain in her well-fucked tailhole could ever be.

Much as Braeburn’s had done, Big Mac’s asshole began to slurp her in, but it was no easy task as the potion had almost worn off completely. Braeburn couldn’t fail in this though, he wanted every bit of her from nose to hoof inside Mac; he just couldn’t get over how cute it’d be to have her fully submerged into her own brother’s asshole.

Braeburn’s own cognitive dissonance drove him forward too, the contradiction of him being completely gay yet wanting to ram an adorable filly almost angering him. It was an anger that could only be solved by completing this holy task.

Big Mac came every bit as hard as Braeburn had, expelling a load into the cooling layer of Braeburn’s seed on the floor and sending a second wave of fluid spreading outward. His ass sucked the last bit of Bloom’s body, her thrashing hoofs slurped inside as the anal ring clamped around Braeburn’s shaft.

Once again, just before the cock left the filly’s hole, it came hard as well. Bloom’s struggles renewed as she felt the flesh cave grow tighter from her own belly expanding from the seed filling her interior. She kept waiting for it to stop, but it just wouldn’t, eventually going so far that she vomited out part of the load as Braeburn was finally tapering off his orgasmic bliss at her expense.

“How is this so hot?” Braeburn screamed, having never felt such bliss before, both from having her inside him and forcing her into another. He knew for certain that they would do this every time he visited now, he’d insist on it! The idea of Applebloom dreading his visits for the distress that came with them made it even more arousing to him.

Braeburn tugged his shaft back finally, popping free from the child inside and then slowly slurping out of Mac’s posterior as well. However, unlike last time, Applebloom didn’t follow. Mac’s body remained bloated as it had been previously. After a few seconds of waiting, the two stallions exchanged a slightly awkward glanced.

“Ah thank it wore off completely,” Mac admitted.

“Ya think?!” Bloom shouted from inside. “Get me outta here! Ah can’t survive on your stinkin’ methane fer long!”

Big Mac squeezed as hard as he could, trying to force her out, but the constipation of having a unmagicked foal lodged inside his intestinal tract was too much; she obviously wasn’t going anywhere without more magic.

“Uh, well,” Braeburn suggested. “We could have you drink a potion; would it get to her eventually?”

“Can’t wait that long,” Mac said. “Granny and AJ can’t see me like this.”

“Twilight kin teleport me out!” Applebloom shouted from within.

“Nah, she’ll just scold me,” Mac rolled his eyes, knowing how unreasonable Twilight would be just because he and Braeburn raped Bloom and shoved her into their assholes for pleasure. “Maybe Starlight, she’s pretty bucked up so prolly wouldn’t much care.”

“Oh right,” Braeburn nodded as he dismounted. “And if ah ‘member right, her marefriend does this trick during her show where she’s shot out of a canon into a manticore’s ass, so they probably get into all sorts of posterior play. “Let’s wobble over to the school and go get ‘er.”

In hindsight, it probably wasn’t the best idea to hobble through town all the way to the school with Mac’s gut swollen like that. Braeburn probably should have just gone and got Starlight, but it was too late now. At least they’d made it to Starlight’s office, though so far all that had happened was Starlight and Trixie were rolling around on the floor laughing at them.

“Stop laughin’ and get me out!” Applebloom shrieked from within. “Ah’m gettin’ dizzy and about ta pass out!”

“Fine, fine,” Starlight snorted, her horn lighting up and effortlessly yanking the well-lubricated filly out of Big Mac.

As the pressure disappeared, Mac’s body imploded back into a more sane position, and the intense change of pressure sent him into another sudden climax. Starlight’s floor was hosed down much as the barn had been, with both the mares suddenly rolling away to avoid getting any of the stallion juice on their bodies. They were just as ultra-mega-gay as Mac and Braeburn after all.

“Ah that was good,” Mac shivered, looking over at Bloom, who was curled up on the floor sobbing again.

“Ah dun wanna go home!” Applebloom shook her head frantically.

“I think she’s right,” Trixie stood up, almost purring as she stood. “We should keep her here for the night… to um… protect her.”

“Yes, I think you’re right,” said Starlight, casually teleporting Mac’s cum from the floor and into Twilight’s office next door.

“Oh thank you!” Applebloom cried. “Thanks fer savin’ me from…” She paused as she looked at Starlight and Trixie, who were both licking their lips at her. “Uh… ya’ll are keeping me here to protect me… right?... RIGHT?!”