verb: to injure someone whether intentionally or unintentionally. The injury may be mental or physical but is usually not serious.
noun: 1. someone who injures another; 2. a deviant.
That guy totally whipheaded me when he cut me off on the freeway.
I got to the store at 9:02 just as some whiphead was locking the door.
That whiphead is always sitting on the corner looking at me.