Top Definition
Harsh swearing for polite surroundings

When pronounced phonetically, MDFK becomes 'mudderfucker' a simple slang abreviation of 'mother fucker', a popular insult.
therefore, M.D.F.K=mother fucker
that son of a bitch is one serious m.d.f.k
by Rich February 01, 2005
4 Words related to mdfk

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