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1.
The fine rust located on bathroom urinals. A result of the semi-acidic nature of urine and poor aim. Common in run down gas or service stations.
"Man that was a nasty piss patina at Quick Trip."
by SaintSAW December 27, 2009
12 1

Words related to Piss patina:

aim dirty gas station patina pee pis piss rust unsanitary urine