SF
Secretly Fat. Someone who looks great when clothed, but during a hook up, you realize he/she is secretly fat.
After yesterday afternoon's hookup, Chris realized that underneath the sharp looking suits, Todd was actually SF.
by Carlito in Adams Morgan March 20, 2006
SF
San Francisco
One of the most beautiful cities in the US and amazing for it has a soul.
I left my heart in SF...
by lois77 June 01, 2005
SF
SF: Stupidty Factor
Acronym adjective for the description of the mental density of people (or distinct lack thereof), possibly in a covert manner to your co-workers/friends
1. There is a high high SF fault in this room.
2. The SF is so thick you can taste it.
by T. Walsh / Ronan XVII January 04, 2005
sexually frustrated. in desperate need of nookie. WAY past the point of being horny.
"omgggggg, i haven't gotten any in TWO MONTHS i am SOOOO s.f."
by KELSCULLHAAAI January 21, 2009
SF
"Sexually Frustrated"
When you havent had sex in a very long time!
Girl:OMG!!my boyfriend has been away for like 4 months and ive been so SF its not even funny -_-

Guy: Damn bro, i havent seen my girl in 3 days im fkn SF!!!
by creatorofsf September 01, 2011
sf
shit,fuck, commonly used in a awkwardly situation,a code word,which is signalledo ut to another person who knows the meaning aswell.
Mom : sally(daughter) i saw your nude photos on the computer
daughter:Oh really mom? (looks at friend and says SF)
by Michael jackson58 October 03, 2009
sf
being sexually frustrated but you're too embarassed to actually say sexually frustrated
wow! im so sf right now don't talk to me
by winbon August 07, 2012
sf
Sausage Fest
Woah Woah Get that sf off the screen
Dude i know right sausage fests are so gross
by doodel November 13, 2011

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