I created a girl I knew in high school in the sims 4 with the sole purpose of getting her as fat as possible.
I started her off with the weight slider at minimum, as thin as possible, and all I did was stuff her fat fucking face with pizza, three different kinds of cake, and tuna casserole. I became so fucking aroused with the sounds of her chortling pieces of cake with gusto, one after the other in non stop fashion.
she didn't sleep, shit, shower. She only fed like a fat fucking pig. The only exception to her routine was when she paused to fuck a fellow fat whore, but then it was back to eat eat eat while I jacked off to the sound of her clogged throat.
I took progress pick after every meal she ate (each meal had 8 servings), starting from the second meal IIRC. Had her eat 10 meals before I realized she peaked. will post below.