YNMF

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 May 21, 2011