SMF 

Stands for So Mah Fan, Cantonese slang for so annoying. Used in phrase to describe a person’s character or the act of doing something tedious.

He is always asking me pointless questions and bugging me with tedious questions when I am working, gets on my nerves! SMF!

SMF by pokeguy July 8, 2020

SMF 

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.

SMF by somuchf.com May 13, 2009

SMF 

SEXY MOTHER FUCKER

Damn Bryan she's a smf

SMF by Inapposite June 16, 2016

smf 

Abbreviation for Sick Mother Fucker

Sarah: I just drank ten Snapple teas!!!!
Leah: you smf!!!!!!!!

*Vulcan sign*

smf by penemaestro73 July 29, 2013

smf 

stupid mother fucker

Did you just fuck that bitch with blue waffles? SMF!

smf by goliath92738 April 22, 2011

smf 

"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

smf by j. yee January 19, 2011

SMF 

Acronym for "Shake My Fist"

When something is so ludicrous that a simple shake of the head will not suffice. Geared towards actions that incite slight anger and/or annoyance.

GIRL 1: "Say whaaaaaaat? Did you hear that Arnold banged his maid, fathered her child the same week he had his own with Maria, AND took her along on family vacations? Shouldn't he just go DIAF?"

GIRL2: "Agreed. ROARRRR, SMF!!!!"

SMF by guanva September 24, 2011