tracksuit bottoms with elasticated waists, designed for the more overweight. they are popular in ireland with knackers, and D4s, who wear them stuffed into Ugg boots or Dubes.
Knacker: Alri anto, nice fat man pants ya got on der
Anto: Fuck off ya bleedin homo
D4 1: Oh ma god babes, totally got myself a pair of fat man pants yesterday.
D4 2: ooooh babes! where?
D4 2: im too embarrassed to say babes. its like a total fucking descent into lower class. but there is a recession on..
D4 1: where did you get them babes?
D4 2: *blushes* Dunnes Stores.