urinograph 

Photos taken of a person urinating at scenic places on a phone or regular camera.

I have a collection of urinographs from my Vegas trip

urinograph by keblonlazykid September 16, 2019

urinography 

The craft of writing or drawing with your pee.

Jenkins was talented in the art of urinography. Last week, after the big snowstorm, he unzipped , dropped his trousers, and wrote a love poem to his girlfriend in a snowbank.

urinography by shootandrun October 29, 2009