look up any word, like thot:
 
1.
Not Safe For You - Similar to NSFW , but more personal
<Bob> Hi, can i see a picture of your boobies?
<HawtGirl69> No, you're like 12.. NSFU!
by HawtGirl69 March 08, 2007
 
2.
Not Safe For the Universe, used to describe something that shouldn't exist, and nothing in the universe wants to know.
goatse, tubgirl, lemonparty, and 2 girls 1 cup are all nsfu.
by Zeddekesu January 12, 2009
 
3.
Need for Speed: Underground - A game where the inner 'street racer' comes out in all of us.
You pick up nfsu yet? I'll out drifto j00!!
by sva4lyfe December 07, 2003