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1.
SFW
Safe For Work. Used to describe Internet content that could be viewed in the presence of your boss and colleagues (as opposed to NSFW, Not Safe For Work).
by The Internet September 12, 2003
 
15.
sfw
Suck Fuck or Walk
Says it all.
My boss left me alone in the store and told me if anyone gave me any trouble to SFW.
by thecatwho August 27, 2006
 
16.
SFW
SFW (adj): An acronym meaning "sexy in a friend way."
Peter: Hello, Joan.
Joan: Hey!
Peter: I think that you're very SFW, Joan.
Joan: Why thank you. You're quite SFW yourself.
by Kevin March 18, 2005