The pocket of fat located on a usually middle aged to old woman. This fat is located above a woman's crotchal region. When you see a floopa, it appears as if the woman is wearing her pants seven or eight inches too high. This area of fatness is usually very visually painful.
Marty: Dude was that a MILF I just saw?
Aurie: Fuck no dude! She had a floopa!