slmfn 

An initialization for, sounds like my friday night.

John: Man, work sucks dick! My boss is really riding me today.
Rob: SLMFN

slmfn by jdpitt13 December 17, 2013

slmf 

SO LONG MOTHER FUCKER

To be used when you recognize a playA, drop that prick.

When he blows you off (repeatedly) ... send your best wishes ... SLMF!!
Then delete him FOREVER!

slmf by Irishrova November 1, 2020

SMFN 

An acronym for “shaking my freakin noodle”

I can’t believe that your manager still listens to early 2000’s emo music. SMFN...

SMFN by Parrot Owl January 13, 2020

slfn 

So Long For Now... instead of ttyl or saying goodbye

At the end of an im, most people write ttyl. My Dad and I write slfn, never goodbye.

slfn by PhotoRoses October 10, 2008

smfn 

something
'I'm busy doing smfn'

'I'm busy doing smfn'

smfn by Pointless Luck May 19, 2018

slmft

Sounds Like My First Time
Similar to "that's what she/he said" - makes a sexual joke out of something non sexual

"Why is it so tight? (Referring to something non-sexual) " "slmft"

slmft by czmj March 15, 2015

slmfyoyo 

So long, mother fucker! You're on your own!

Oh, you don't wanna hear me out? SLMFYOYO!

slmfyoyo by KiwiSplasher April 8, 2015