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A male who usually does something bizarre, crazy, obscene, and/or extremely stupid but funny at a party, therefore receiving the name PARTY GUY! from his fellow party people.
(Matt cracks a plank of wood using his head)

Everyone: PARTY GUY!!!!!!!!!!!!!
by Party guy! June 19, 2009
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A rowdy, party seeking, character who enjoys being known as one who parties often, and establishes this by doing so.
That Stefano is a world renowned Partyguy.
by Alellujah June 20, 2009
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