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"NSFOY" stands for "Not Safe For Ourselves, Yeah!", and it refers to content that is not suitable for the person consuming it. This acronym can be used to warn others about potentially dangerous or triggering material. It can also be used humorously to describe content that is mildly uncomfortable or embarrassing.
Person 1: "Hey, have you seen that new horror movie everyone's talking about?"
Person 2: "No, I haven't. Is it any good?"
Person 1: "It's pretty intense. Definitely NSFOY though, so be careful if you're sensitive to graphic violence."
Person 2: "Thanks for the heads up. I'll make sure to avoid it then."
NSFOY by Spa Yoda Fan! April 14, 2023
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(NSFYM) Not Safe for Your Mom

A word, phrase or thought that is likely to embarrass, fluster or even cause a mother to cry
Ed: I want to post to Twitter, but your mom follows me and this comment is definitely NSFYM.

Andy: NSFYM? And why does my mom follow you?

Ed: Yeah, (NSFYM) Not Safe for Your Mom. And, um, can you repeat the second question...
Related Words
NSFOY • NSFYT • nfoys • NSFO • NSFOH • NSFOPW • NSFY • NSFYE • NSFYH • NSFYL
An abbreviation for "Not safe for other people's work."
I disagree that a photo of a woman's back with a knife in her neck is NSFW.

I think it's at best NSFOPW.
NSFOPW by Moggraider February 3, 2010
acronym for No Soup For You; originated from the Seinfeld episode, The Soup Nazi; often shouted angrily when you an individual doesn't get something they wanted, for little or no obvious reason
Soup Nazi: "You want bread?"
George: "Yes, please."
Soup Nazi: "Three dollars!"
George: "What?"
Soup Nazi:"No soup for you!", NSFY
NSFY by antman32p May 1, 2010
An acronym that stands for "Not Safe For Your Ears".

As one example, you may use this acronym on YouTube when your video contains an audio (sound) component that some viewers may find distasteful, such as heavy metal music like Anthrax or Megadeth.
{in the YouTube description of a video I made and uploaded myself}:

*NSFYE* (Not Safe For Your Ears). A video of the Syma S107G R/C Coaxial Helicopter flying in my room, set to another Anthrax song.
Abort this video immediately if you find thrash metal music distasteful.

That music you hear is the song "Howling Furies" by Anthrax. This heli is not sound-sensitive; the audio may safely be ignored or even muted if it pisses you off.
NSFYE by Telephony May 18, 2011
Not suitable for office
This smoking hot girl's photo is totally NSFO!
NSFO by eagle1maledetto February 4, 2010
Not Safe For YouTube. Used to describe a video clip that violates or infringes on YouTube's policies or TOS for any reason, whether it be for porn, hate speech, a violation of the DMCA, or other. Includes all content not acceptable under Fair Use.
Pretty much anything rated TV-MA, such as Game of Thrones, is considered NSFYT, both because of the brief nudity in some episodes and the copyright.
NSFYT by u4g2o8d April 22, 2019
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"Booya! That freestyle was dutty!"
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Brent: he just tossed me a slop grenade
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