An abbreviation for "so much fun".
The antonym of FML.
Man: Where were you last night.
Man 2: I was at a karaoke bar. SMF.
stupid mother fucker
Did you just fuck that bitch with blue waffles? SMF!
Save My Fucking Seat.
What you say to your "friends" when you get up at a party to go get some more beer.
Asshole #1: "Go fill my keg cup."
Asshole #2: "SMFS"
"shaking my fist"
an acronym to let someone know that you are shaking your fist in joking anger. This can be thought of as going along with the phrase "why, I oughta...."
give me back my damn ps3, you've "borrowed" it for 5 months. smf
Abbreviation for Sick Mother Fucker
Sarah: I just drank ten Snapple teas!!!!
Leah: you smf!!!!!!!!
Smell my finger . . . an acceptable form of proof that you got some action.
My boy E rolled into the hotel room looking ragged as hell at about 7a.m. and woke us all up yelling smell my finger (smf)!
Soulmate Forever. You find the perfect soulmate and join with them for the rest of your life
I think I met my SMF on the train today.