A selfish conceded girl who only thinks about herself and is so concerned about how she looks she tends to block out reality. A girl who wheres a very flashy outfit, dress, or mini skirt to a casual party or scene when unnecessary.
It derives from the infomercial that sells "Bump Its"
Example: Usually the girl at the party that is yelling absurd very dumbed down threats to someone (Guy or Girl) who called her out for being a bitch.
They are often stuck-up and conceited and are often complete bitches.
Other features include orange tans and obscene layers of make-up.
Guy 1 : "Have you seen that Bump-It over there?"
Guy 2 : "Yeah. She's a total bitch. I would steer clear of her."
Guy 1 : "Yeah, I hear she's a bit of a whore too."