Acronym meaning "black ass nigger". A "b.a.n" is a self proclaimed "gangsta". B.a.n's are easily recognized by their attire, usually being dressed in du-rag, hat or "fitted", tight or baggy pants sagging below their ass, and sneakers. B.a.n's have a tendency to violently steal things like ipods and phones from random citizens so stay alert.
"Dude did you see that? That b.a.n just beat that guy up for his ipod."