SF

An abbreviation for School Friend. Similar to fake friend. Someone that only wants to be friends at school

Don’t worry about him, he’s only a sf anyway.

by SangerBanger March 5, 2018

sf

Two letter shorthand for the words "So Fucking." This is used in tandem with an adjective to enhance the meaning of it.

Omg we had pizza from Lombardi's and it was sfgood.

Dude 1: That hot chick was a total bitch
Dude 2: Man, sfstandard

by LordPye November 12, 2009

SFS

1) Symbol For Sex

2) A sex symbol

Guy 1: Damn Sally is so fine she a sfs

Guy 2: A what?

Guy 1: A symbol for sex

by thenumber1word November 5, 2017

sf

Skull fuck

I sf'd the bitch last night.

by Sf-er November 14, 2011

SFS

So fuken sexy!!!

Online dating >>> all u say on one line to flirt I'd "SFS!!!"

by Sks sks August 13, 2015

SFS

Sorry For Spam
Abbreviation used in chatting and emailing

Used when you feel compelled to forward a funny email to your friends

SFS. Just had to send this to you.

by hersh_t May 27, 2010

SF

SF is a black guy who's dream is to become a rapper. Nobody know's if he's an incel but his behavior is VERY suspicious. Calling people "chad" and calls himself a incel while he calls his friend TKF is a gigachad 'cause his friend dated 4 girls and he's dated NONE. The reason why we don't know this is because he always memes and he is never really serious. He usually ends plurals with "z" for his rapping future.

omg that guy always jokes about incels he's such an SF

by spong11111222 April 11, 2019