SLF 

When asked if someone was smoking , you answer…”Yeah, she smell like fire!”

“Was Janice just outside smoking?” … “Yeah, she passed by me, SLF”

SLF by Johnny The Gent September 6, 2021

SLF 

(Self Loading Freight) A derogatory term used by airline personnel to describe passengers.

Just give some peanuts to the SLF in Coach.

SLF by Anonymous October 14, 2003

SLF 

Sassy Little Fuck. Filled with unlimited amounts of sass and attitude. Often sleeps in late and misses class...and whenever we can't find him it's assumed he is sleeping or doing some other sedentary activity. It's funny because he is super skinny. Eats A LOT and will routinely eat your food and never pay you back...likes tofu and other vegatarian shit. Will quickly tell you if your idea is bad...even if it really isn't. It's ok though cause we love him and his sassiness.

Where's SLF? Oh, he's probably sleeping.

SLF by The CAC July 23, 2012

slf 

originated in belfast it literally means to smoke like fuck.
not of tobacco but of cannabis SLF

eg gerry smokes like fuck

graffiti on a wall stating: niall 2006 SLF

slf by hairyhole August 29, 2006

SLF 

sounds like fun. can be used as a sarcastic or serious form.

slf

SLF by pacman fan June 29, 2010

slf 

so gf Significant Lady Friend

I met up with my bro and his slf - she's hawt!

slf by diamonddawg November 29, 2007

SLF 

A hxc myspace gang formed in Connecticut that you may not join. There are nine members all of whom are infamous.

"Dude, I saw SLF roll through here earlier, they had the hats going and everything."

"What the hell does SLF mean all they say when I ask them is 'if we told you we would have to kill you'"

SLF by SLF Associate April 14, 2006