Top definition
When simply calling somebody a "cock head" or "knob jockey" will not do. You bring out "Cock rat".
originaly from the tv show "Chips" where EVERYBODY on that show were "cock rats",
"Your a fag"
"shutup. You fucken cock rat"
=O
"yeah thats right. pwnd."
by Josh Pazza February 08, 2007
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2
A girl who is a complete slapper. ie, a slut
Derived from mallrat
I got with Jenny last night. She is such a cockrat, she will fuck anyone.

Wendy is such a cockrat man, I wouldn't even fuck her with your dick.
by Mattlockā„¢ April 27, 2008
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3
a species produced when a penis and a mouse or rat mate and have a son. this son looks much like a cross between a cock and a rat, therefor, it is a cockrat.
"Crikey! Today, we're huntin' the New Jersean Cockrat today on the Croc Hunter! OI!"
by kzos June 17, 2003
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The vengeful act of crapping on a lover's chest while they sleep.

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