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Someone stupid or rude
You sir are an assclef
by J.J.S. January 11, 2003
1) Someone extremely stupid/rude.

2) An attention whore.
1) Man, Evan is being such an assclef today.

2) Did you see that guy beat that old lady up to get people to notice him? What an assclef.
by Johnny J Shmoove January 16, 2003