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1 definition by Jimmeh!!!

 
1.
To become a nerd for a temporary amount of time e.g. to study intensively.

Can be abbreviated as NIU.
Person A: Hey don't you have your final exam tomorrow?
Person B: Yeah man, that's why I'm nerding it up tonight for 5 hours.

Person A: Yo, have you studied for your test yet?
Person B: Just about to NIU.
by Jimmeh!!! May 24, 2008
21 2