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Abbreviation for "You're Not My Friend!". Often saved for folks with whom we are quarreling, joking, or otherwise truly not friends.
Person 1: "Dude, shut up."
Person 2: "You can't tell me to shut up! YNMF!"
by magsol March 04, 2011
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2
Short for "your not my friend".
Something to be said (preferably shouted) while losing an argument. So as to say, "fine you may win this argument, but as a fucktard, i will disown friendship of you"
Person 1: blah, blah, <rational argument>.
Person 2 (in desperation): YNMF!
by refers_2_me April 29, 2011
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