Ky Belly Boy:
I don't find many stories about Fat people just enjoying Stuffing themselves. No magic, no revenge, or force feeding. Just gorging to their hearts content. Alone or with other gluttons. I am trying to write stories like that and when I write a good one I will post it.
I've definitely tried to write something like this. It's quite hard to do, without other characters to bounce off and create those twists and turns - things that you need for a compelling story. As is always said about fiction writing, you need some sort of conflict.
I have a story that is half-finished that would probably fit your description pretty well. If I ever get around to posting it, I will have to let you know.
