A group of people or individuals that like to dress up as clowns and cause mischief with their bottoms. This is usually achieved by sneaking up to a person or an "Ass target" as they are called, and expel gas on the person when they least expect it.On some cases when there are multiple Ass-clowns in one area they try to gang up on one person. They do this by circling the target while slapping their asses, and gradually shuffling closer to prevent escaping.
Michael Bolton: Yeah, well at least your name isn't Michael Bolton.
Samir: You know there's nothing wrong with that name.
Michael Bolton: There was nothing wrong with it... until I was about 12 years old and that no-talent ass clown became famous and started winning Grammys.
Samir: Hmm... well why don't you just go by Mike instead of Michael?
Michael Bolton: No way. Why should I change? He's the one who sucks.