friend 1: so i saw you getting pretty friendly with melissa last night eh?  friend 2: ya, but then she dropped the b bomb on me
the casual insertion of the fact that a girl has a boyfriend into a conversation she is having with another guy
"friend 1: so i saw you getting pretty friendly with melissa last night eh?  friend 2: ya, but then she dropped the b bomb on me" What is the definition of "b bomb"?