Wonder what you can make with it.

I’ve been trying for a while. It’s not very good for anything.

I tried for a bit, but the story always turns around to "and then she realized that she needed to eat healthy and exercise. she did and she became thin and lived happily ever after". I've also tried Bing Chat and it generated some amazing weight gain stories, but it always clears them before finishing saying that it made a mistake. It's truly suffering... Maybe there's a way to trick it into doing making the character fatter, but I haven't found it yet.