Cheating the Cycle of Life- A Padded Pony Collab

Pumpkin Cake was looking  intensly at his brother's diaper, while he was bobbing a yellow ball in her hooves. Specifically, Pumpkin was looking at Pound's crotch, noticing something... strange, hidden by the diaper, something that was creating a bulge, one that she had never seen on herself.

At first Pumpkin thought it was a sign that her brother had an accident in his diaper, but, when he was changed, the buldge always remained there no matter what, while she had never, ever had such visible protuberances, save for when she hid toys in her diaper.

This odd thing made her grow curious by the day, but she wasn't sure if she should have asked to mommy, daddy, auntie Pinkie or her brother.

Right now, her curiosity was at a peak.

"Hey there!" Pinkie Pie said with a wide smile on her face, trotting inside the room "how my favourite twins are doing?"

"Good auntie!" Pound Cake said, dropping the ball to shriek that to Pinkie. Pumpkin got up.

"I good too!" Pumpkin said, before going for Pinkie's leg, so that she could ask her that question. Pinkie Pie, with one fell swoop, picked both Pumpkin and Pound Cake and set them on her back.

"That's really good, but you'll be even better after a changie-wangie!" Pinkie said, as she brought both Pumpkin and Pound to the changing table with green padded surface and stacks of supplies underneath. Pumpkin decided to ask right then.

"Auntie, why Pound has bigger diapee?" Pumpkin said, pointing at the bulge in Pound's padding "Why do I not have it?"

Pinkie Pie set them both on the changing table.

"Oh, Pumpkin, Pound is a boy. He has a weenie, you have a kitty." Pinkie Pie said, as she grabbed the wetwipes and untaped the twins' diapers, thusly exposing their wet padded and slightly dirty butts. And, of course, their genitalia.

Pumpkin gave a good look at Pound's and he did likewise with her. Pumpkin saw a black stick-like thingie that dripped and shone with pee and, underneath, two thingies.

"What is name of my again?" Pumpkin asked, as she was wiped clean by Pinkie.

"It can be called kitty, vagina, pussy, cunt, jade gate, potato,  slit, smaller mouth..." Pinkie Pie kept talking about those names, still cleaning up the twins and moving them in the playpen as she did so. However, Pumpkin, begin a little foal, lost her at a random point.

"Cunt? I like the sound."