Acronym.

1. Powerlifting. To "Smash Fucking Weights". Popularized by one Vincent Dizenzo, an 800 lbs. bencher who wanted to quickly settle a dispute about training methodologies.

"Too many guys are looking for the right program instead of just Smashing Fucking Weights".

The key to getting strong is to just SFW.
by unstable August 01, 2006

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Subs fucking where? Used in the anime community to express displeasure for a lack of subtitles for a certain series.
Anonymous 1: The raws for the new Eva movie are out.
Anonymous 2: SFW?
by an /a/non January 30, 2010

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SFW is an abbreviation for "so fucking wankable" or "so freaking wankable," describing the attractiveness of a girl.
Wow, that girl is SFW!
by Dawginatrix March 24, 2011

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A quick, heart felt reply to something you really don't care about. See "So Fucking What?"
Person 1: Hey, I beat Final Fantasy 37 last night!
Person 2: SFW
Person 1: Yeah, well... fuck you too.
by Darkfiend January 10, 2005

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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 03, 2007

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Stands for "So Fucking Weak." - The ethnic people's alternative to saying "LOL" aloud.
Keisha: So I found out he got thrown in jail. SFW
by DatBoi4157 June 17, 2009

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So Fucking What
title of a horrible teen angst movie from 1994, with stephen dorff and reese witherspoon
guy1: hey, i watched so fucking what last night
guy2: so fucking what?
guy1: exactly
by scat May 05, 2004

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(It's a) Small Fucking World
I know one person in SAF, she's a back cracker. What?!? She was your chiropractor when you lived there? SFW!
by daikenn February 09, 2007

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