NSFS

Similar to NSFW, however stands for Not Safe For School, which is more strict than Not Safe For Work, including vulgar words, violent content, sexual content, etc.
This website is definitely NSFS
Just stay away from NSFS content
by Billiam Beaver May 22, 2017
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Nsf

North side fresno

a fresno gang (red)
There is no example for that ...all i can say is NSF
by Angie Mofo October 9, 2019
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