not that I pee in the shower, but please think about it!
No thanks Jalima!;
My mind boggled so I consulted my cardiologist and she said, and I quote, "Don't even think about it, Alan, ( we're in a strictly professional relationship, so I can't ask her to call me Rufus, yet) Your blood pressure has been excellent for years so it would be silly to throw it all away for a cheap thrill. Stick to humour; it's safer."
So there you are. Who can argue with a cardiologist. [rhetorical]. 
Btw. I'm told pee is an excellent lubricant for shower bases so don't forget to take a non-skid mat in there with you, otherwise you could have a nasty bumpee landing. 