>>Wow, I never thought I'd be put on the defensive about not peeing in the shower. Tell me, do you also sh*t in the shower?<<
There are actually people who drink their own pee (for medicinal purposes) with no ill effects. Eating your own poop is NEVER a good thing. Lot's of really bad stuff there!
Pee is quite sterile - at first. It's not the disgusting thing one would think at first glance. Check out the threads on military rations hydrated by pee.
I saw this on deployment once. We had a Phantom Sh!tter who would leave large, healthy loads in the most bizarre places...the hood of the battalion commander's humvee, in the portable shower units, wherever. It was pretty bizarre. He never got caught.