1. A situation with bitches. 2. When a group of females all pretend to be friends but in fact they all hate each other, talk shit, doublecross, backstab and gossip. 3. When chicks make thinly veiled insulting remarks to each other while trying to maintain an otherwise friendly outward demeanor.
so-and-so told cheerleader she looked hot in her new outfit but then totally talked smack about her with what's her face and the ugly one. what a bitchuation.