Top Definition
sff
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
sff
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
sff
''so fxcking funny''
-hey how was the Hangover?

-SFF!

-would you go out with me?
- HAH, that was sff.
by yerAjerk July 30, 2009
Sff
So Freaking Funny (usually sarcastic)
"Your face looks like a rat, because you have huge teeth!," Josh said.

"Wow. Sff," Jeremy replied.
by Mialynn13 March 28, 2015
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