One bad ass mother fucker who fucks strippers 2 or more at a time. WINNING
Person 1: You know that kid G-off?

Person 2: Yeh
Person 1: He's a Party Ma-Sheen, all them bitches love him.
Person 2: Winning
by HoT_ChOCol@te March 24, 2011
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A hard core partier. Not just a party machine, but a ma-sheen: someone on the same level as Charlie Sheen. Someone with a tiger alcohol blood content who thinks they're a winner ... but is actually a loser.
He sniffed coke off a stripper's tit! I can't hang with him, he's a party ma-sheen.
by The Cason-Point March 7, 2011
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