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"That site has too much nasty content, it's nsfm."
nsfm by Iwakura Lain September 19, 2005
Related Words
nsfm NSFMR NSFMV
Not Safe For Mom. It might be safe for work, but you don't want your mom reading it -- especially if it's on your blog.
Should I post this link to College Humor? I wouldn't say it's NSFW, but it's probably NSFM.
NSFM by Snjr7e923 November 29, 2006
Not safe for Muppets; An outfit or a picture that would get banned on Sesame Street after Katy Perry was censored for her cleavage in her duet with Elmo.
Your Facebook profile pic is NSFM, too much boobage!
That top is so NSFM, I can practically see nipple!
NSFM by Rockstalker September 25, 2010
The NSFM tag originated in Reddit's /r/trees community of marijuana lovers. It means the post is Not Safe For Munchies, so you should avoid looking if you don't want to be hungry.
Man, you should have tagged that picture of pancakes as NSFM!
NSFM by LivingDeadInside July 2, 2014
Reddit acronym: Not Safe For Master Race (refers to Reddit PC Master Race users)
"Check this pic I took of using a crescent wrench to install a new CPU. Definitely NSFMR"
NSFMR by byslexic July 12, 2016