Top Definition
noun. Someone that has Engaged in sexual intercourse with a variety of Races eg. African-America, Asian, Indonesian etc.

adj. To Mutfuck: To Engage in sexual intercourse with someone who has been 'around the block' many, many times.

event. Mutfuck Challenge: Contest in which contestants must try and engage in sexual intercourse with as many culturally-different people as possible within a month eg. Slovakian, Aboriginal, Eskimo-ian
by ZacjayNow August 14, 2010

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