BDAR

Pronounced phonetically as "Bee-Dar", an acronym for "Bitches Don't Act Right". Used when a person (usually female) fails to follow proper rules and expectations of society.

Guy 1: Dude, my girlfriend cheated on me. Again. She could've at least waited till I left the room...

Guy 2: Told ya about that chick, man. BDAR. Been rotten since Eve ate the apple...