NSFA 

Not Safe For Anyone. Not only are all NSFA things considered NSFW, but you would look at these things at home, with the curtains closed, and no one watching you. Borderline disgusting to most reasonable people. Known to corrupt small children.

Bob: hey, want to see my image folder on the server?
Steve: k, sure
Steve: *checks and sees it's full of guro*
Steve: good god, nsfa tag, maybe!?

NSFA by NordsternMN February 9, 2008

NSFA 

NSFA - Not Safe For Australia

Due to stories spread in January 2010 about Australia banning small breasted women in pornography due to "promotion of paedophilia" a new meme was created to indicate if a photo/video is considered illegal in Australia.

Damn, I bet those titties are NSFA!

NSFA by Atlantis69 January 29, 2010

NSFA 

Not safe for anyone.

Dude, that post is NSFA.

NSFA by Proi May 17, 2013

NSFA 

Not safe for Angela. Angela is a typical goodie goodie Christian who will crucify you for saying anything bad. NSFA is much worst than NSFW.

Jason: Yo want a happy tapioca?
Jesse: woah you can't say that in front of her that's NSFA

Jason: Oh no now I'll be condemned to hell

NSFA by JesseDay0 May 31, 2018

NSFA 

Not Safe For Anyone

"If Donald Trump get's elected, his plans are NSFA.

NSFA by mandogy2 June 26, 2016

NSFAA 

NSFAA
Not Safe For Anyone Anywhere
Similar to NSFW (not safe for work) but reserved only for the worst. Used before posting a link, picture, video or written words such as the famous Goatse, 2 girls 1 cup, 1 man 1 jar , 1 man 1 screw driver, Mr hands, meat spin etc
For those times when a person is about to see/read something that will shock/offend 99% of the population.

Steve is sent a link to Mr. Hands (he has no clue)
"DAMN IT JOHN!! next time write NSFAA before I open something like that". "If I had opened that at work I'd be fired for sure !"
"I'll never be able to unsee that. WTF is wrong with people?"
That's fucking gross you sick bastard!"
Steve is now scarred for life

NSFAA by Crazyedmonton January 4, 2012

NSfAwaWS 

Not Safe for Anyone with a Weak Stomach

Holy shit that 2 girls and 1 cup video is NSfAwaWS!

NSfAwaWS by Michael Stevens the Big November 10, 2007