Top Definition
Similar to the gaydar, nerdar describes the ability to detect nerdiness in other people.
Protagonist: Hey, did you know that today is the day of the kiss?

Foil: The sixth of July is the day of the kiss? Six times seven is forty-two, do you think there's a link somewhere to the meaning of the world?

Protagonist: Dude, chill out! You're setting off my nerdar something fierce!
by defix July 06, 2008
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