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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
6 14
Not safe for school, like NSFW, but not safe for school instead of work.
Guys, check this site out... Careful though, its NSFS
by Anuj Saraswat June 02, 2005
135 87

When your chequing account does not have enough money for the chequeholder to cash.
sorry, your cheque came back NSF.
by ik999 March 17, 2006
58 14
No Strings Fun, having sex with someone without getting into a relationship with them.
girl: i'm looking for a full-on relationship
guy: fuck that, i want NSF!
by zigzag604 October 03, 2011
26 9
An ancient word, usually it is found in old cyrillic or aramaic texts acompanied by a simple drawing of a bovine form and/or swords. It is often used to refer to a group of people that are "more 1337 than you", or a series of deviant sexual perversions.
"You suck, we are NSF!"

"So I got some glue, ballpoint pens, and teacups together last night and NSF'ed your mom!"
by assrabbit July 14, 2004
48 32
Non-Sexual Friendly way.
So, if you were saying goodbye to a friend you'd say:
See you tomorrow! Love ya NSF!
by dumbledoc May 08, 2007
34 22
national science foundation
NSF funded our grant for $329,500.00
by jack the azz January 09, 2009
21 16
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 17, 2011
3 3