And they are always in the exit row, it is fucking amazing. Almost every flight I am on, every week, you can find the fattest fucker in the emergency row.  My favorite though are the emergency row seats with the fixed metal sides, I was sitting in one once, enjoying the sensation of stretching out and saw a fat ass try to sit next to me, the metal bent outwards, and it got stuck in the seat. Took it several tries to unwedge its ass and get a new seat. It was glorious.