I must piss...
Mercedes loves to pose for the cam and it may happen she forgets about time doing this. It was a bit odd to her that the photographer gave her more than enough to drink between the shots, but who cares. But then she has to go. No she already has to run! But he has her to stay in place for the shot to complete! A latex sheet is right at hand and Mercedes has to piss now onto the rubber thingy!!!