Top Definition
When you clearly haven't drunk enough fluids and your pee is a dark shade of golden brown, can affect both men and women. Often smells like peanuts.
First guy "Man I just did a proper gravy piss! Pass the beer, I need fluid .."
Second guy "Nice, you might wanna flush twice, I hear they're stubborn."
by Smeggles182 November 25, 2009
5 Words related to Gravy Piss

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