A butthead is someone who performs a head-butt on a person while in a tight situation.
Like if someone was late for a flight, and they were frantically half jogging through the airport just to catch their plane. Then some old goose gets in the way, and then they just head-butt them, and move on with their life like nothing happened. Yeah that would be a butthead.
by Landon Parker August 18, 2005