sf or SF(when frustrated) are abbreviations for the commonly used phrase, so fucking.
I walked in on my father making love to the maid an his penis was SF big!

Damn this sun baby lava stone moon crystal kush is hittin sf good on jah.

sf/SF
by NGFBoiyo September 25, 2020
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Shit-faced shitting. When you get so drunk and wasted, such as during a ring dunk ceremony for a certain, infamous, university, that you start blindly shitting like a goose everywhere without due regard.
Bob: "Hey, is Joe in the bathroom still?"
Jill: : "Yeah, but don't go in after him. SFS everywhere."
Bob: "Cool, thanks".
by Rearmount September 24, 2014
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"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 1, 2011
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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 3, 2009
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An abbreviation used to describe having skateboard/snowboard fantasy syndrome. Fantasizing about a trick you want to do but can’t
Oh man I’m having some mad sfs at that 12 stair over there “
by YayeetV2 May 10, 2018
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SFS is an abbreviation for ‘shoutout for shoutout’ mostly seen on Instagram stories. ‘Shoutout for shoutout’ means to advertise other people’s accounts and in return they’ll do the same.
Friend 1: sfs?
Friend 2: sure
Both: post each others @ on their stories
by Willyman555 July 17, 2019
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Same Fuckin' Shit; A reaction to someone when two things he/she mentions are undeniably and objectively similar or identical.
John: Hey Frank, can you pass the Booze?

Frank: You mean alcohol...

John: SFS
by Albertross99 January 4, 2011
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