LF 

It comes from the super hero from the webcomic Cyanide and Happiness, who flies down into the scene, wearing a shirt saying "LF" on it, and promptly says "LOL!! FAG!!" to the reader/other characters in the comic, and flies off.

"LOL!! FAG!!"

LF, the abbreviation for lol, fag, is often used in gaming as a burn or insult.

LF by Jake Kirk February 20, 2007

LF 

A gang originating in New York City, seeing themselves as the rivals of the gang LB(lostboyz). Short for Long Foundation

He rockin the white flag, he LF.

LF by Black Snake August 21, 2007

LF 

Short for 'Lebanese Forces'. Ultra right-wing Catholic militia notorious for it's massacres of civilians durring the Lebanese civil war and it's alliance with Israel. Merger of the Phalange, Guardians of the Cedars, National Front, and other assorted baby-killers. In short, total raving psycopaths with guns. Supposedly disarmed in 1990, it still shows up at oppurtunistic moments. Members are generally the most closed-minded and bigottous in Lebanon, and wish to return the country to Christian Hegemony.

My aunt's with the LF, I pretend not to know her.

LF by tuma September 9, 2006

LF 

Little Fucker

“Stop being a lf and do your homework” -mom

LF by Keepingupwithkatie February 20, 2018

LF 

A shortening mainly used in gaming meaning Lag Free (No lag)

ex: Is that server LF?
No its lagging bad.
ex2: Guys come play with me on this game http//:randomgameidkwhattowrite , Its LF! :)
Okay Im coming! Tired of all lag.

LF by YTAZURE September 4, 2016

Lf 

Like fuck

Lf you ain't dating her bruhh

Lf by Emman bruhh October 26, 2015

LF 

LF, similar to LG or LB, is a shortened word for "Little Fob". This means that the person allocated with this label typically have traits from both being a Fob and may also appear to have behaviorisms of an LG, such as muzzing.

LF can be applied in instances such as: "omg did you see Judy the other day, she wore a qipao to shadows, what an LF".

LF by BigJiJiRen June 7, 2019