Fat people, some of them, don't believe they are fat.
I was visiting at the hospital in our city a while ago and two obese women were about to light up cigarettes in a no smoking area outside the main entrance. I said 'are you fucking serious, there's no smoking signs everywhere'. One of them called me ignorant for chastising them and I said 'two fat women lighting up a leaning up against an 8foot no smoking sign, and I'm ignorant?'. One of the cunntts had the cheek to say 'im not fat' at which point i didn't know whether to laugh or cry. They moved off to a smoking area though