Well, its not just fat. Americans are just plain slobs. Jeans used to be casual, now its dressed up. Forget about a tie and a jacket. You go to the store and its sweat pants and tank shirts. That's if your lucky. Quite often its pajamas. And tattoos. Gee whiz its bad enough that you want to mutilate yourself, but with shorts and tank tops, they share slovenliness with everyone, whether we like it or not.
Crocs, hoodies, long shorts. Obesity. Unshaven. Tattoos. Americans are just plain slobs. God forbid someone call them on it.