Top Definition
Something better then the rest... AMAZING
That shirt is totally testicool! I love it!
by BIOCHESSOFTHESOUTH April 15, 2011
1 more definition
Adj. having the coolness of a testicle.
It is often used as a vulgar and derogatory nickname for people you dislike.

Joey "Did you just see that bro dude walk by?"

Sally "Yeah, he was really testicool."

by Rednick Billy April 27, 2009

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