If you make fun or talk shit about fat people (or show legit concern) so many people will call you an asshole and accuse you of being insensitive.
I've had so many people call me a loser because of my alcoholism and yeah I shouldn't drink so much (i've actually not drank the last 2 days and am trying to stick with it for as long as I can) and make very bold comments towards me about it, and yeah It sucks to hear it because I know they're right, but I don't get super defensive over it.