An act, no matter how erotic, over some time, can become routine and lose its appeal. That is what happened to me and R. All the excitement of watching and being watched started to become stale and I had to come up with something to keep it hot. Thank goodness for Tumblr and its insanely erotic ideas. It has been six months since I first asked R to pee in front of me. From the first trickle of pee that dribbled from her p...