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1.
NSC
Non-Sexual Crush

having a "crush" on someone that has nothing to do with physical attraction. Normally someone that is completely outside of your sexual preference like someone from a gender you are not attracted to or someone far older or younger than you.
1: "Dude Sean Connery is totally the best James Bond"

2:"I know I total have a NSC on him"
by AsburyKL September 29, 2011
 
2.
NSC
(Stands for "Nah Son, Chill") A warning phrase used by a wingman when he notices the girl his intoxicated buddy is talking to is fat or ugly.
"So what's your major?"
*Wingman pulls buddy aside* "Nah son chill."
"Oh wow... damn."

"Even after I sipped Hennessey she was still a NSC."

by yoyojoe September 16, 2007
 
3.
NSC
Naked Sexual Charisma

taken from a quote from the movie Batman Returns when Penguin was talking to Catwoman
i thinks me and you should go home and indulge in our NSC
by B Rant April 18, 2008