A prom queen (or king) candidate that is obnoxious, self-centered and is practically foaming at the mouth to be crowned. A promzilla. Also, PROM BITCH is the original title of author Ami Allen-Vath's YA novel, LIARS and LOSERS LIKE US.
Can't believe she's nominated for prom queen...more like prom bitch.
Not to be a prom bitch but she didn't even match her cummerbun to my corsage.