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Something totally worthless. Used to show absolute disdain for a subject, person, or idea. Always used as a negative. Derives from the tradition of country boys, when no other alternative presents itself, to fuck a warm pile of cow dung (cow pie).
I don't give a cow pie fuck what she says, I'm buying that bike.

Dude! What in the cow pie fuck made you think you could clear that rail?
by areaman26 January 18, 2009
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