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22 definitions by phillydrifter

acronym for "Most Massive Dump," used by guys in mixed company since most women would be disgusted by the thought of it.
Dave shows up late at party.
Eric: "Dave! Good to see you, what took you so long?"
Dave: (in front of date he brought) "had to take an MMD but it's all good, I'm here now."
by phillydrifter January 01, 2011