Curious to see if anyone else has tried this!
An ex gf was really into golden showers so we thought we would try giving each other massages with our pee instead of oils. Very relaxing and extremely intimate! Really recommend trying it.
My partner and I use plastic sheets to cover the mattress then put a fitted sheet over the top. Garbage bags on pillows with cases over the top of them. Great fun to relax and pee freely over each other and the cleanup is Minimal.