Not just pie, but all the cakes!

Isaac put his hand on the pinkish-purple wooden door, then stopped to think. What did he want from Pinkie Pie? He'd accidentally given Twilight a huge oral fixation, he'd given Rainbow Dash a massive pussy... He kinda wanted to give all the 'Mane Six' their own 'specialties' like that, but he wasn't entirely set on what those would be. He didn't want there to be much overlap, but he didn't want them to be too hyper-specific in the kinks they provided - he imagined he'd be going back to them many times.

Eventually, he snapped his fingers as a solution came to mind. Pinkie Pie had a massive sweet tooth, so why not lean into that? "Does Pinkie Pie have an especially big, chubby, super-curvy but super-soft body that's perfect for cuddling, snuggling, and somewhat literally smothering her partners in affection?" With a grin of anticipation, Isaac pushed his way in, letting the smell of baked goods wash over him as the door rang the entrance bell.

It was still early enough in the day, so Sugarcube Corner was far from empty. There were a few other half-naked ponies in the booths enjoying cupcakes or donuts, as well as a couple of ponies waiting in line at the counter to place their orders. To his mild surprise, though, it wasn't Pinkie Pie who was at the counter. It was... a very, very busty young mare with a yellow coat and an orange mane? "Ah, welcome to Sugarcube Corner! I'll be right with you!" she yelped with a perky eagerness before focusing on the first customer in line. Her breasts looked enormous on her slim frame, resting on the counter easily, covered only by a straining apron that left the sides exposed.

Then Isaac was bumped in the head by a firm pair of ass cheeks.

The culprit was a cream-colored, brown-maned young stallion with a surprisingly strong physique and an especially large, firm bubble-butt hovering back into him while carrying a box. Upon seeing Isaac, he immediately blushed red. "Oops, s-sorry," the young pegasus murmured, then floated around him to carry the box through a pair of swinging doors.

"Ah, Pound!" came the high-pitched, almost squeaky voice of the lanky yellow-and-orange Mr. Cake as he poked his head out from the kitchen. "Remember, wear your sock while you're on the clock!"

"O-Oh, right, whoops!" Pound Cake - who was almost entirely naked save for an apron and a thong, Isaac realized - quickly put the box away behind the door and then zipped above everyone's heads, going behind the counter and up the stairs.

Mr. Cake chuckled, emerging fully from behind the kitchen, stirring a mixing bowl. He was dressed in only an apron... and some kind of thick cloth tube of the same material as the apron covering his ankle-hanging dick, from the base to the flare, leaving only the very tip exposed. "Sorry about that, everyone. Can you believe it, though - just months after we all got back from the Family World, and our twins already wanna help around the shop!"

Everyone had a good-natured chuckle at that, except for the young mare at the counter - Pumpkin Cake. "They still won't let us bake yet, though." That prompted another round of laughter.

"We're working on it, we're working on it," Mr. Cake assured her in the playful tone of someone who'd had this conversation dozens of times before. Then as he scanned over the line of customers, his eyes inevitably landed on Isaac. "Oh! Hello there - don't think I've seen you before in our humble shop! You're that - oh, what's it called - hu-man?"

Heads swiveled and eyes locked on, and suddenly Isaac was the center of attention. Thankfully they didn't have the hungry eyes of the last time he'd been surrounded by a crowd, but there was an unmistakable sparkle of naughty interest from mares and stallions alike as they watched him. Expressions ranged from 'Oh, this is gonna be good,' to 'Oh boy, I hope I get to see something happen!'

Still not used to public speaking or the like, Isaac bashfully waved at everyone before turning to Mr. Cake. "Yeah, that's me. Name's Isaac."

"Isaac, right!" Mr. Cake repeated with a smile and a kind nod. "You've been the talk of the town for a while. We all noticed you keeping your distance, but we're happy you've decided to come join us! Is there, ah, any particular reason you've come here?" Isaac couldn't help but notice there was an eager hope in Mr. Cake's eyes, a desire that outshone every other pony present.

"Well, uh..." Now Isaac wasn't sure what to do. He'd just assumed he'd stumble into Pinkie Pie, but now the whole Cake family seemed to be in the crossfire too.

Then a sweet, motherly voice came from the kitchen. "Oh, do we have a new guest?" A chubby older mare with a blue coat and pink mane emerged, bearing an absolutely enormous pair of knockers that no apron had any hope of covering. She was idly stroking one breast and coaxing milk into a large measuring bowl while her other thick teat dripped milk onto the floor. Upon seeing Isaac, she gasped in delight, and Isaac could have sworn she licked her lips real quick for a second. "Ah, Isaac the human! Welcome, welcome! Do let us know if there's anything we can do for you!"

"Mmhmm, anything!" Mr. Cake agreed with a vigorous nod.

It was all too surreal. The entire Cake family, including the grown-to-adult twins, was half-naked and none-too-subtly interested in him. He was just supposed to fuck Pinkie Pie, dammit!

"Oooh, do we have a new friend??"

The floor vibrated as something heavy stepped down the stairs, accompanied by the clapping sound of wobbling booty.

Pinkie Pie's legs came into view, thickening on their way up into enormous thighs. Then an absolutely monstrous ass revealed itself, almost too thick to fit in the staircase and brushing against the sides, squishing her balloon Cutie Marks against the railing. Followed shortly by a jiggling belly in front that looked incredibly soft and squishy. Which was in the shadow of two massive jutting torpedo tits that would wobble and sway every which way if it weren't for the string bikini tied to her nipples holding them relatively in place. Then her arms, which were also large and soft, then finally her grinning face as she landed on the ground floor with a heavy bounce that made her whole body jiggle.

Pinkie took one look at Isaac from across the room, then gasped. Her big poofy mane atop her head wiggled, her gigantic soft tits sprayed a quick burst of milk, and she moaned as she seemed to have a quick orgasm right there on the spot. She stumbled forward and leaned against the counter, smooshing her breasts around Pumpkin Cake, who blushed at being surrounded by pink boob. "W-Was that Pinkie Sense?" the female twin asked. "What does it mean?"

Panting for breath with a hazy grin, Pinkie replied, "It means... he's gonna fuck all of us...!"

Now all eyes were definitely on Isaac. And he hadn't even done anything yet!