Cake and Pie orgy montage!

Next thing Isaac knew, he had hundreds of pounds of mini-giantess MILF riding cowgirl on his cock, pressing him down into Pinkie Pie's bed. Her hands were behind her head and her immense blue tits were bouncing up and down on her chest, spraying milk in every direction.

"CELESTIAAAAAA!! Fuck, Carrot, he's so GOOD! Human cock is AMAZIIING!"

Mr. Cake remained where he sat across the room, jerking his own long, hard horsecock with incredible fervor, almost weeping with joy. "Ngh, Cup Cake...! I love you so much...!"

Pinkie Pie was sitting nearby with the twins, letting Pound and Pumpkin suckle on her huge soft tits while fondling each other and waiting for their turn, always keeping one eye on Isaac.

For his part, Isaac was paralyzed and overwhelmed, just as he'd wanted. He was too small and too weak to do much except lay there while Mrs. Cake bounced her heavy, jiggling body on him over and over again. But what he hadn't expected was how amazing it felt to have his humongous dick fully immersed in pussy without too much over-stretching. He'd gotten used to stretching out Twilight's throat and Rainbow's cunt, but now he was back to an enormous woman like Celestia who could take most of him with only the slightest bump, letting him feel her expertly squeeze around him with her inner walls. The juxtaposition of being so enormously hung for his own size and yet almost a perfect fit for such a giant woman was absolutely delicious.

When he finally came, she tightened around him with an orgasmic convulsion of her own. "YESSS! CARROT, HE'S CUMMING! HE'S FILLING ME! OH CELESTIA, THERE'S SO MUCH VIRILE CUUUM!!" Isaac's balls, now enlarged to fill Celestia herself to pregnant-looking bloat, pumped what felt like gallons into Mrs. Cake, making her pudgy belly fill out and round out with heavy, sloshing semen.

Mr. Cake, sensing their orgasms, started spurting like a fountain, and Pinkie Pie and the twins creamed the floor where they lay, all sharing in almost simultaneous pleasure just from watching Isaac fuck. Some pegasi hovering near the attic window overheard their moans and started cumming too, and the ponies on the ground watching them experienced a smaller sympathetic orgasm as well. So that was at least a dozen ponies all at once experiencing breathtaking, shuddering pleasure just from one human fucking.

And that was just the first round.

Stuffing Pumpkin Cake was the opposite feeling from fucking Mrs. Cake. His dick was so large and yet she was so short, when she let herself get all the way down to Isaac's lap, cock buried to the hilt as she rode reverse-cowgirl, the bulge in her stomach reached above her own head! The feeling clearly took her breath away, barely able to string consanants together while she dealt with the feeling of her pussy and womb being filled to the brim and beyond by a superior living cock.

She could hardly move like her mother had – she was mostly just sitting there, letting his cock warm itself inside her body. It was like she was his personal little cock-sleeve, with huge tits on the front that he could reach around and grope to his heart's content.

Mrs. Cake, sitting next to the bed, reached out and rubbed her daughter's shoulder. "Remember to breathe, honey~," she encouraged Pumpkin. "You don't need to hold it all in – let out what you're feeling~."

Pumpkin Cake took a deep breath... and then yelled at the ceiling for a few straight seconds. "AAAAAAH!! WHYYY? WHY DID NO ONE TELL ME... IT WOULD FEEL SO GOOOOOOD?!? IT'S LIKE I'M ONE WITH HIS COOOCK!"

Mrs. Cake chuckled lewdly and leaned in a little closer, her enormous floor-touching belly sloshing with the movement. "And you haven't even felt his cum inside you yet~. Gosh, you might get so big that you can barely walk for the rest of the day~..."

The unicorn teen seized up at the thought of that, then wrapped her arms around and pulled up her legs against the massive body-stretching cock bulge, hugging and stroking it with every fiber of her being she could muster. "Cum, Master, please cum, please cum! I want it! Make me your little cum-dump!!" Her horn lit up and encased Isaac's balls in a magical tingling aura that rubbed and kneaded them from all sides, encouraging them to churn out their contents for her.

That did the trick. Isaac's cock swelled and pumped the second load of the orgy into her, the tip of her belly-bulge rounding out as his cum filled her like a balloon, followed by more that blended together as it slowly expanded the young mare's gut. Everyone in the room and listening outside it came again as they watched Isaac cum, knowing that their Master was pleased and that they were all privileged to share in this pleasure together.

By the end of it, the three-foot-tall shortstack mare was so full and bloated that she couldn't even see past her own cum-inflated belly.

Isaac wasn't ready yet to commit to fucking a stallion in the ass, but there was one thing he wanted to try...

That's how Pound Cake ended up laying beneath his cock, the young pegasus stallion's own ponycock rubbing against the human's thicker and longer dick, pressing his cock down against his abdomen and chest just by sheer weight. The three-foot shortie of a stallion was the perfect size to wrap his arms and legs around the cock and hump it like some sort of cock-fairy, grinding his dick against the underside of Isaac's for nothing more than the pleasure of frotting. Meanwhile, with Isaac's drooling tip at his face, Pound gladly rubbed and licked the sensitive cockhead that nearly eclipsed his own actual head.

It was an almost bizarre scene of masculine submission, but damn if it didn't work.

"A-Am I doing good?" Pound asked in his raspy teen voice.

Isaac grunted and nodded, a bit winded from two immense orgasms already. "Y-Yeah...!"

"Mm, yeah, I can feel it, every pulse, every throb..." the teen stallion gasped. "Fuck, just feeling you against me is gonna... gonna make me..."

Feeling a moment of panic as he realized there was something about this situation he didn't want, Isaac quickly murmured a question under his breath. "I-Is it true that cum and pussy juice and milk magically instantly evaporate and disappear cleanly off beings who don't want any on them, even if it's an accident?"

Pound started cumming, his cock pulsing beneath Isaac's and spraying an enormous load of pony-cum all over the both of them. Except that any of Pound's cum that touched Isaac's cock instantly disappeared before he could even register any wet, sticky feeling. The cum that landed purely on Pound's body, meanwhile, remained as evidence of his own submissive pleasure.

Mr. Cake let out his third rocketing load of the day, arcing so hard and so far that some of it nearly splashed onto Isaac from across the room – and thankfully disappearing before it actually could. Mrs. Cake, Pinkie, and Pumpkin, all mashed together in a sapphic pile, moaned into each other's mouths and tits as they kissed and groped and suckled from each other. The bystanders outside were still hanging around, adding their muffled moans through the walls to join in.

Pleasing so many ponies at once spurred on Isaac's third orgasm, his cock painting Pound's face white as it pulsed onto him and the bed and the wall behind him. The Cakes and Pinkie Pie all came again for the second time in a row this round.

Despite having done little but lay in Pinkie Pie's bed and get pleasured by eager ponies, Isaac was feeling exhausted. Pinkie Pie seemed to sense this, so she volunteered to give him something she called a 'hugjob' – which turned out to be her sitting her massively soft ass on his chest, squeezing her thick, plush thighs around the base of his cock, smothering the rest of his shaft with her belly and huge, soft tits, reaching in and stroking it some more with her hands, and leaning into her own cleavage to give the tip of his cock some licks with her long tongue.

"Mmm, you've got a hard-working cock, don'tcha~?" Pinkie Pie cooed between licks of his tip like it was a lollipop she was storing in her cleavage. "Got through all the Cakes – even Mr. Cake by proxy!"

Indeed, the Cakes were all resting across the room now, in varying degrees of looking tuckered out. Pound Cake was still covered in cum, Pumpkin Cake was laying on her bloated belly, and Mrs. Cake was tending to a very exhausted Mr. Cake by feeding him her breastmilk. The father's cock hung limply between his legs like he'd just gotten years of pent-up lust out of his system.

"Gotta say, you know how to start an orgy-party!" Pinkie continued, jiggling her tits in alternating rhythms to batter the top part of his cock. "I think next time we oughta put out more snacks and water and have some more ponies to rotate in, maybe with groups working in shifts? What I'm saying is that between you and me, we can make this even BETTER next time!"

Isaac was buried under a small mountain of pink ass and cotton-candy tail, but he nodded in agreement. Even being at the head of a self-centered harem orgy and not doing much was somehow still exhausting. Definitely not an everyday thing, at least not until he was stronger.

Pinkie slowed down her movements, rolling all the various parts of her body against his cock in sensual motions, more giving his cock a massage than trying to stroke him off. "Mmm, you're a man after my own heart~. We've both got eyes bigger than our stomachs sometimes! But where I like stuffing myself with treats, you like cumming! I think that's great!"

Isaac couldn't help but chuckle at Pinkie's slightly backhanded compliment, especially with the context only he knew. Sure, he just barely managed to survive an orgy with five ponies with the deck flagrantly stacked in his favor, but the courage was admirable, right?

"Mmm, ohhh, I can't wait until I get to kiss this big, pretty cock with all my friends~. And maybe the Princesses! And all the friends we've made from other places! 'Cuz you're gonna claim us all, right? You're gonna get stronger, and sexier, and bigger, and you're gonna fuck everyone in the world, and we're all gonna cheer you on...!"

"Grahhh, fuck...!" Isaac groaned, trying in vain to arch his back and lift his hips, to no avail under Pinkie's pillowy softness.

"You gonna cum again, Isaac? One more big cum for the road~? C'mon, shoot it out all over me and my big bubblegum titties! Glaze me in that sweet, sweet frosting!"

From across the room, Mrs. Cake called out, "Yes, Isaac, show us a Master's virility one more time!"

Pumpkin Cake moaned, rubbing her belly. "Cock that big... It can do whatever it wants...!"

Pound Cake grunted, still stroking his cock. "I can still feel its warmth against me...!"

Mr. Cake panted for breath as his own long ponycock rose once more in anticipation. "Fuck, Master...! No one's touched me and I'm about to empty my balls...! P-Please, cover Pinkie! Show us how a real man does it!"

Despite how drained and exhausted he was from cumming so frequently back-to-back, Isaac couldn't resist the siren call of multiple ponies encouraging him to be his most perverted self. He groaned as his cock pulsed, feeling his heaviest load yet travel up through his shaft, squeezing past Pinkie's thighs, pushing over her belly, traveling up through her cleavage before erupting into the air high above Pinkie's head like a geyser. The Cakes all cried out in joyous pleasure one more time at seeing his cum emerge.

Pinkie hugged his cock with her tits and moaned with her tongue out as semen rained back down on her, staining her mane, face, and bare breasts. "Ahhhn~... Frosting~...!"