Top Definition
someone you could consider a goofball or knucklehead.

clammerheads like to smoke pot and giggle, often.
Mike: Pray tell.
Mike: I don't know why i said that; I just wanted to use that phrase - that's what you should've replied with when I said there were jokes to be made.
Trisa: You're such a clammerhead.
by coned_miro April 18, 2011

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