nsfsi 

Not safe for spanish inquisition

The witches in the Middle age were nsfsi

nsfsi by Omegaestapillad0 January 29, 2022

nafsika 

She is an extreamly sexy. Beautiful on both the inside and out. Intelligent. There is no difference between her or that of a Greek goddess. Unique...you won't find another girl like her. Once you capture her heart, make sure you do your best to keep her or you will forever regret not having her in your life!

You wish you were a Nafsika!!! Keep dreaming!

nafsika by Boutouiii May 22, 2016

NSFS 

"Not Safe For Straights", a tag mostly used on twitter by gay people, used during and before Pride Month, users are not allowed to post any straight content under their tweets, or the kpop stans will go after you.

It started as a mockery of "Not Safe For Ramadan", but is now widely used across twitter and is now yearly occurrences.

Yo not cool bro my name says right there (NSFS), why are you replying with men fucking pussies on my tweets?

NSFS by TheZetaSeries April 17, 2020

NSSI

Stands for "Non-suicidal self-injury"

The coping mechanism of harming yourself without the intent of dying.

"I heard you talking about hurting yourself you good bro?"
"Yeah man it's just NSSI"

NSSI by FnkyFrsh July 12, 2021

nsfseok

Known as the number one SIMP of Jung Hoseok, instagram editor (bts related), and of course talks a lot about him.. you know who I mean.

“did you see nsfseok’s recent edit? not surprised that it was about jhope”
“here goes nsfseok talking about jhope again”

nsfseok by Nsfseok August 22, 2021

NSFS 

Not safe for school, like NSFW, but not safe for school instead of work.

Guys, check this site out... Careful though, its NSFS

NSFS by Anuj Saraswat June 9, 2005

NSFI 

Not safe for Instagram

Don’t post that, it’s NSFI

NSFI by Heyitsj000 February 3, 2020