Kyle: Cartman, you're such a fatass.
Eric: I'm not fat, I'm big-boned!
Gunna just ate 3 bags of totinos pizza rolls as a snack what a fucking fatass
A person that wears there step sisters panties
YO look at the fatass hes wearing his step sisters panties
Fatass - you.
"Hey fatass! Get off your fucking screen!" or "Why are you even looking at this you fucking fatass."
Anyone named Philip
or someone that may not be fat but just eats a lot
used as a joke