I don't usually need to urinate when I'm in the shower but if I do I go ahead and let it flow. That water is going straight down the drain along with the dirty soapy water anyway. No peeing in the bathtub and I don't go in public swimming pools anymore because I worry more about feces than urine. When I was a kid I peed in the pool. If I'm outside I go wherever I'm at as long as no one can see me.