A fork of Rural Dictionary
BYOBB = Bring Your Own Brown Bag Typically a butterface, who as a great body that you would fuck, but a face so hideous you need to put a brown bag over it when your fucking her.
Guy 1: Yo man, Kristina has a bangin body, but her face is whack. Guy 2: Dude just BYOBB. Guy 1: Oh shit, bring your own brown bag, yeah that would work so I don't need to see her face while I'm gettin it in.