But for the record, consider this - no one ever seems to give a fuck if and when anyone says negative things about fat people. I'll be the first to admit that I'm sensitive to that shit and it actually makes me uncomfortable when I read it. I feel like it isn't usually covered in these sort of things because it's a choice or whatever, but still, you can't pick and choose what hurts people.
At least when it's not used against other people, it's typically a positive stereotype. (Fat beats etc.)