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1.
Extra urine produced by a human body that has consumed several cans/bottles of beer.

Preferred by gays into water sports.
Tyrone was the favorite to give golden showers simply because of the volume of urine he produced while drinking.
by Richard Black March 12, 2005
 
2.
that long piss you take after drinking several beers
"Man I've been drinking for a while now. Any minute I'll have a huge beerpiss."
by stevelightning August 13, 2011