Non-Sufficient Funds
Banker: "Sorry sir, the check you deposited last week has been returned due to Non-Sufficient Funds"

Customer: "Wow, really, that's my paycheck."

Banker: "Yes sir, here's a copy of the check. As you can see, it's stamped 'NSF' from the paying bank."
by Der Duh Blah May 18, 2011
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North Side Family.

"NSF" is a North Side gang majority of skin heads.

"NSF" is located in North Phoenix of Arizona.

"NSF" is full of white pride' ers and is known to not affiliate with anybody that is not of the Caucasian ethnicity.

"NSF" are not allies or affiliated with any Norteno's, they feel that is for pansie ass Mexicans.
"North Side White Pride"

"Damn fool, them NSF fools are hard."

"Hey Jose, essay, I don't think you wanna fuck them crazy skin head North Siders."
by uknowhosketch May 13, 2009
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Near-Sighted-Freak
-Someone who has poor vision due to staying up very late while yelling at their sisters about nonsense, and during the day is an absolute mutant of the human nature. They are very aggressive and like to verbally arrange fights, but never actually follow through. All in all, they are people who you should avoid at all costs, although it is very easy and amusing to harass them.
MAN 1-dude, my neighbor over the weekend woke me up at 3.30 PM by yelling about markers, then the next day he threatened to tear both my ACL and MCL with a toothbrush, but couldn't see me very well.

MAN 2- ouch, you've got a bad case of an NSF as a neighbor.
by zferrisLT21 December 10, 2009
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The Northern Special Forces multi gaming clan, always full of shit and will most likely get naked for only 10 US or Canadia dollars.
"Tommy!!, what are you looking at? Is that a porn site? I'm telling mom!!"

"Shutup bitch, it's just the =|NSF|= website."
by squishy July 6, 2004
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dude 1: Hey! wanna go to whataburger?

dude 2: Sure, but NSF... im really hungry!
by frenchfrylover October 2, 2011
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Solid party company organised by two siiikkk bre's get there cos its gonna be boom.

18/06/04
NSF is gonna be tha boomest party of the year. Have u got ur ticket yet???? www.ticketmania.co.uk
by Jake tha take April 30, 2004
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A person of the female race who throws up "NSF". Said groupie(s) then procede to give pleasure to NSF members.
Fuck there's nothing to do tonight. Oh wait we got NSF groupies.
by welikesexbustinpublic July 22, 2011
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