NSA is an abbreviation for "Nuclear Shit Attack". This is when you have a sudden and powerful onset of diarrhea that comes clear out of the blue. Can lead to sharting and other embarassing situations.
I had to give up my place in line when I was suddenly hit with an NSA!
by scorpio169 March 15, 2010
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The National Scrabble Association. This organization sanctions Scrabble tournaments across the country and is the sponsoring entity for the Official Scrabble Players Dictionary.
The 2005 National Scrabble Championship was won by NSA member Dave Weigand of Portland Oregon over 19 year old Thai phenom Panupol Sujjayakorn.
by nsa member December 22, 2005
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"No strings attached" in reference to sex. When gay men use this term, it means that they are using their sexuality as an excuse to avoid commitment or cheat on their partner. Generally, gay men that use this term begin using it at an early age and will continue to use it until they are in their 40s and finally realize that they are now too old to just hook up, but they are totally alone because gay men their age are either in real relationships or only interested in young men that use this term. They come to regret their years of NSA lifestyle and wish that they had focused on more important things than sex.
"Looking for hot NSA action. I don't want to know your name, just have sex with me."

"A date? Ha! I am totally into NSA fun only!"

"My partner is out of town. Come over for some NSA action."
by JDnyc September 28, 2012
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The epitome of the American male. Not the NSA radiates confidence in everything he does, whether it's ordering a drink, buying a set of wheels, or dealing with women. He's slow to anger, brutally efficient when fighting back.

Not the NSA carves his own path. He wears, drives, drinks, watches, and listens to what he chooses, when he chooses, where he chooses, uninfluenced by fads or advertising campaigns. Not the NSA's style is understated but instantly recognizable. Like a chopped Harley or a good pair of sunglasses: simple, direct, and functional.

Picture a mix between James Bond, Tyler Durden, and the Dos Equis guy
When it is raining, it is because @Not the NSA is thinking of something sad.

Not the NSA's cereal never gets soggy. It sits there, staying crispy, just for him.
by skzr November 7, 2013
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"Natasha Henstridge...NSA! ^.^ "
-me

"The NSA is basically the successor to the CIA."
-me
by Dave March 31, 2004
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Acronym for The National Scrabble Association. Most common members are pussies.
Hey man, want to join the NSA?
No, I don't have a pussy.
by TheShadowFox October 14, 2010
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