A large booty on a girl. Named a smotherer because if she were to
sit on your face, she would completely
smother you. The term smotherer is not specifically
positive or negative, that judgement is made by the user of the word. Some men like smotherers, some don't.
Guy1: See that girl over there? She got a fat
ass man!
Guy2: Yeah man, that's a real smotherer. If she sat on my face, no way
would I be breathing.
Mmm mmm!