Top Definition
When lice are livin in your genital hairs, and you got a whole nest of em'.
She was gonna bang him, but then she found out he had some nasty nesticles. and she was all "ew".

Dude, he could start a flea circus with his nesticles.
by i@mTheM@n September 30, 2009
Testicles, so covered by hair as to look like bird or rat's nest.

A natural unshaven way for a man to live.
Shane's nesticles were so hairy it reminded me of a residual forest.
by Matt Rondeau 3 April 23, 2009

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