a
shorten version of the word "MO", which is a shortened version of the phrase "
MO-FO", which is also shortened for the term Mother Fucker.
Basically it's a quick and easy way to call someone a mother fucker without having to use all those
syllables.
"You are such an
MMF!"
Jason: Hey guys! wow you look like crap today, well i
gotta run BYE!
Todd: What is that guy's problem?
Gilroy: I don't know dude, i guess he is just an
mmf