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Another slang name for testicles.

It is, in a sense, a more comical way of saying nuts.
"Dude! She kneed me in the neerts!!"
by Rax1134 October 05, 2009
To be used in the place of 'haha' or 'neener-neener'
I beat you at chess once again, Fred! Neert neert!
by An Anonymous Neerter December 26, 2009