I'm very cordial and polite to everyone I meet, fatties included. On the inside I'm seething with contempt for the fatties though and I'm laughing on the inside and behind their backs and they'd never know. I call it fat hate espionage. On the rare occasion I'll openly shitlord with a disgusted look or a rare comment. It all depends on the time and place really. Being subtle really helps because I feel it stings more for them