SF 

1. San Francisco, California
A city on the west coast of the US

2. Special Forces

SF is also an acronym used to describe the special forces of the military, whichever one that may be.

Some examples of Special Forces units are:

Navy SEALs (Sea, Air, Land), United States
Army Green Berets, United States
Army Delta Force, United States
SAS (Special Air Service), United Kingdom
Spetsnaz, Russia and Former U.S.S.R
Kampschwimmer, Germany
Commandos Marine, France

1. San Francisco is a beautiful city

2. Guy 1: Wow, that guy made it into the SF

Guy 2: Yeah, he must be good

SF by megachiken21 January 21, 2009

SF 

"Self freedom". Freeing yourself, sexually. i.e. Masturbation

Dude, I like totally SF-ed 5 times yesterday...I'm dry.

SF by Ashley March 27, 2005

SF 

Sour Face......a facial frowm in response to an awkward moment.

1) Oh, that bitch was SF.

2) After your friends notice your foul mood, you might here them say..." stop being so sf "

SF by Biasotti December 28, 2005

sF 

The creator of 75.43% of all EFNet IRC traffic (*see: Eris Free Network, IRC). His sad devotion to telling epic stories in as many lines as possible sometimes annoys those around him, however his sexy man-charms, gaping wide anal pore, and care-free attitude make him an endearing companion.

1 Example of praise -> "sF is teh r0x0r".
2 Example of homoeroticism -> -%- (_sF) sF bends over, lubes up, looks through his legs, and winks at pX

sF by mysterious stranger July 16, 2003

sf 

A word commonly used for a certain area of neopets. It's an abreviation for Snow Faerie, a being that can be extremely nice or a big poohead

Yes! The sf gave me an easy quest!

Oh fiddle sticks! sf is a turd.

sf by Shoop Shoop Shoop Shoop Ay Doop February 15, 2003

SF 

SF is a saying in norway wich the closest translation in english is sneaky fart. silent but deadly.

Oshit is she a SF?

Did she just pull a SF? Smh

SF by Stensengern November 22, 2017

SF 

Acronym - Stands for sword fight

Alternate Meanings: Science Fiction, Stop Flirting, San Francisco, and many more...

Yo dude, let's 1v1 and have a sf!

SF by RedSheep MinecraftAndMsp YT May 31, 2018