Short hand term used when texting which means Spontaneously Fucking Funny! This term is to be used only when something is quick, witty, and off the cuff. This term is not to be overused! sff puts an lol to shame!
U R sff! It turns me on!:-)
by notnicole November 27, 2011
Same Fanbase Factor
This relates to the GameFAQs polls where two characters have the same fanbase, such as Zelda/Mario.
HOLY CRAP, Metroid got beat by SFF!
by The Cryptic July 26, 2006
So Fucking funny
Omg Your SFF
by ilollolol June 06, 2009
Acronym for Stoner forever forever stoned
Chatter1: So do you smoke weed?
Chatter2: SFFS
by Herbal Santa March 04, 2008
''so fxcking funny''
-hey how was the Hangover?

-SFF!

-would you go out with me?
- HAH, that was sff.
by yerAjerk July 30, 2009
sexually frustrated female. A girl who is either not in a relationship or is in a relationship that is not fulfilling her sexual needs.
"God, I haven't made out with my bf in 3 weeks, I'm such a SFF"
by tangerine-y April 04, 2007
Sisters For Forever... not blood but one heart
Ther are only 3 S.F.F. members and they are awesome sweet girls,nothing can come between that love.
by bff sista sff April 18, 2006

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