Shinji Ikari's fat body was taking a fat poop.

Plrrrbbbttt

"Hmm hmm," hummed the former pilot of Unit-01, as Kaworu Nagisa pushed him along in his bariatric wheelchair. "A nice poopoo, Kaworu-san."

"Indeed, my pet, indeed," said Kaworu, patting his soft shoulder.

Shinji was a big fat boy. He currently tipped the scales at 405 kilograms, an absolutely massive blob of lard. His mammoth butt was more than two meters wide and jutted out behind him in big, bloated cheeks dimpled with cellulite. His thighs were as big around as truck tires, and his fat calves sagged over his ankles. He had to spread his legs wide to make room for his huge belly, which jutted in front of him; it was as large as a child's swimming pool and dominated his body from the front. Atop the belly were his hefty fat breasts, large boy boobs the size of slightly-deflated beach balls. His arms were as lardy and fat as the legs of some lesser fat people, and they sagged in bloated lumps over his elbows.

Shinji had a face like a fattened pig. He had three huge chins, the lowest of which sagged between his breasts and jiggled at the movement of his head like the dewlap of a cow. His bloated, fat jowls oozed widely to either side of his mouth. Even his forehead was a bit chubby, and made his blue eyes beady. His short-cut brown hair was comical atop his fat head, like a wig on a farm animal.

PLRRBBBTTT!!

Shinji sighed comfortably as he continued to defecate. A big, hefty load of goopy, yellow-brown turds was exiting out of his loose anus. He ate so much every day that his body produced a considerable amount of waste, and his love of gay sex over the years had rendered him unable to control his bowels. When Shinji's body needed to poop, poop is what it did, and he had no control over when or where it happened. As a result, Kaworu bought him bariatric diapers that he wore constantly. Kaworu often got cute, childish prints on these diapers. Today's diaper had teddy bears on it. The printed cartoon bears bulged and deformed as Shinji's feces pushed the diaper back and out.

"What a nice day to go to the art museum," Shinji said, resting his hands comfortably atop his gut. "I can't wait to see that new sculpture exhibit."

"It should be truly stimulating, my dear," said Kaworu, turning a corner on the sidewalk.

"And after we're done there, we can stop by the bakery," said Shinji. He licked his lips. "I am going to be needing a cake or two in about an hour or so."

"We could go to the bakery first, Shinji-kun, if you are hungry now."

"Oh, Kaworu-san, no, not yet," said Shinji. He laughed, and his chins wattled as he waved his plump hand. "My hunger's not here yet, I can just feel it coming. You know how it is with me!"

They approached the entrance to the museum.

Pllrrrbbbddd

"Hoo hoo, Kaworu-san, I may not be done pooping by the time we get inside," said Shinji. "It's shaping up to be quite the load! It must be all those doughnuts I ate at breakfast. Sugar does make me extra-poopy!"

"Sugar is only appropriate for a sweet boy like you, Shinji-kun."

"I know, and it's soooo good!" Shinji cheered. "I never would have dreamed, before I met you, that I had such a sweet tooth. But I love sugar! I can't get enough!"

Plrrrbbbddd

Kaworu pressed the wheelchair-accessible button and the doors of the museum opened automatically. He pushed Shinji inside.

BLRRBBBDDDD

"Oop! Bit of a big flow there, Kaworu-san."

"I hope you are proud of your defecation skills, my pet," said Kaworu. "They are merely a testament to what an impressive eater you are."

"Oh, Kaworu-san, I take it all for good," said Shinji. "I eat a lot, so I poop a lot! And I love having sex with you so much... I wouldn't trade that for anything, even being able to use the toilet properly."

"I love you so dearly, Shinji-kun."

"Ohhh, Kaworu-san..." Shinji put a hand to his fat chest. "You really are my one true joy."

He settled back in the wheelchair as they approached the ticket booth. The massive mound of poop in his diaper squished against his ass cheeks, staining them messily with shit.