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This is an acronym for a put down or invitation to a male/female meaning "My Cock Your Mouf".
Seth yelled at the woman "ahhh MCYM my young fine lady!"

"Oh yeah, MCYM mother*%#&%!
by Justin Leader December 05, 2006
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Sep 9 Word of the Day
the thing that you don’t have when you’re phones percentage is over 20
phone: why don’t you go to sleep tommy it’s 2 in the morning?
tommy:why don’t you die you dumbazz
by lik_frls_dis.me February 12, 2020
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