A loud, obnoxious person who often tries to act just like a stereotypical version of the race they're surrounded by
May or may not have a frighteningly large forehead.
Person 1: Did you see that Tyra Banks? She was talking ghetto slang to some black people, but started talking like a valley girl to a bunch of white folks
Person 2: I didn't notice. Couldn't stop staring at that fucking fivehead