A woman with a fine ass body but an ugly face. But hey, that's nothing a brown bag can't handle.
"girl you're a brown bagger, you ugly as hell, but I would still hit that if you put a brown bag on your head."
By Lynda
Brown Bagger
Another term for butterface (see definition) where the chick is hot except that if her face were a weapon, it would be a harmful one (she's ugly) but you are drunk and she has a nice body, and you want some 'nanny, so you put a bag over her head...it's the degrading trade off we give women for allowing them to vote.