Endless Piss 

Endless piss is what it's called when one is expelling urine for a long duration which is accompanied by excessive drippage followed by even more pissing, causing one to have to stand for an extended period of time or sitting down when one's feet begin to hurt as a result.

Quentin: Yo nigga, what took you so long in there?

Demarcus: Yo, I was stuck with endless piss, ya heard?

Endless Piss by Mick the Dick September 27, 2011

Endless Piss Syndrome

When one urinates for extended amounts of time, generally significantly longer than their normal amount of time. Endless piss syndrome often occurs in the form of many small outbursts of urine after the main stream has ended. This can happen from a number of different factors, one is drinking way too much Coffee.

Dude I've been stood here for hours, I have a major case of Endless Piss Syndrome

Endless Piss Syndrome by ReallyCoolDude June 3, 2015