Top definition
An act of revenge against someone, the cockstir consists of you stirring your victim's drink with, you guessed it, your cock.
"That fucker just pissed on my leg"
"Dude, while he's getting you a towel, give him a cockstir."
"A what-"
"Shut up and stir his drink with your dick. That's all you got to do."
by Xionico February 24, 2009
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