if a couple breaks up, the female one shows off her cleavage in public, like by wearing a dress with a low neckline.
I revenge-cleavage my ex all the time.
I'm all for girls' revenge-cleavage thing.
Selena Gomez revenge-cleavaged Justin Bieber the next day they broke up.
Talyor swift did revenge-cleavage on Harry 'cause she wouldn't put out.(oh plz, that girl puts out, thou)