This reminds me of an incident from a few years back. When I was pissing in the alley around the corner from my bar after it had closed for the night. Suddenly, this sexy, friend of a friend walks through the alley with another woman. As she passes behind me she comments "oh, that sounds like a good one. Now I feel like taking a piss too." Unfortunately, she didn't.
But I have experienced random women popping squats beside me while I was in mid-stream. Putting me in the dilemma of trying to empty my bladder before achieving the firmness of a steel beam.