It stands for Secret Federal Weapon.
I tried to kill the Cyborgs with my SFW but instead they got it from me and threw it down the elevator shaft.
by jamie August 11, 2003
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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 19, 2005
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SFWS stands for Small Fat Woman Syndrome

This is generally used to describe woman who are 5' 5" or under, have an obvious overeating habit and are general arseholes.
They use their arseholeness to compensate for their evergrowing belt size
Person 1 : "Why is she such a dick?"
Person 2 : "Probably suffers from SFWS"
You look over and see the contents of the fridge being Henry the Hoovered
Person 1 : "Ah of course, that makes sense"
by BaudScaler January 30, 2018
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abbreviation for "shit fuck whore." Commonly used by the Texas A&M Corps of Cadets to describe something terrible, as an adjective, or just in casual conversation. Essentially, it can be plugged in anywhere that people aren't uptight assholes. Used particularly by the unit N-1.
"Man I bombed my Calc test. sfw!!"
"Dude, this stupid sfw car won't start."
"SFW!"
by MrVara October 28, 2011
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Acronym for sensor-fuzed weapon. basically an air launched bomb with a sensor on the front that can detect how high it is and detonate the bomb about 10 meters above the ground, spraying shrapnel over a large area. highly effective against infantry and light vehicles
the advancing convoy was obliterated by 3 sfw's.
by MarkTehGreat May 4, 2007
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Porn that was been edited using Photoshop or MS Paint to cover up anything that would be NSFW, usually in a comical manner.
"Man, I was looking at some SFW porn during the seminar and no one noticed!"
by PeteyCoco October 26, 2009
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"Smash(ing) fucking weight and get(ing) fucking huge".

Often used after an individual is suggested to "keep lifting heavy and taking a multi(vitamin)".
Bro 1: Hey bro, you've got some ridiculously jacked bicepts!
Bro 2: Thanks bro, it's all about SFW & GFH, yaknahmsayin?
Bro 1: Oh man, I was just lifting heavy and taking a multi... I should step my game up.
Bro 2: It's the only way to get jacked fibraz, brah.
by das goat October 8, 2010
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