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).

SFW by The Internet September 12, 2003

SFW Porn 

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!"

SFW Porn by PeteyCoco October 26, 2009

SFW 

Safe for work. Something on the internet that would be acceptable to view in public.

Don't go on 4chan, it's not SFW

SFW by Colder August 25, 2011

SFW & GFH 

"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.

SFW & GFH by das goat October 9, 2010

SFW 

"Straight Fucking Water"

- jacksepticeye

I need some of that sfw bitches

SFW by Pizza Place July 8, 2019

SFW 

So Fucking What

I got a 10 cent raise #SFW.

SFW by ground pounder September 6, 2015

SFW 

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.

SFW by unstable August 2, 2006