lol...yep a few times. I even used it to get a friend out of a ticket. Well actually I used UC. She was talking on the phone and driving, and we were going around a bend, and there was a cop and dead-stop traffic. Anyway, I basically started freaking out saying that she was on the phone with my doctor, and please please please I couldn't wait and had to get to a restroom immediately. Every time he started asking for her license I would start freaking out more! So Finally he let us go, and got a cop to guide us out of the traffic. Most people do not know what it is. A couple of times the cops asked me what is UC? I say its a digestive disorder, that involves intestinal bleeding, and I need to go home and take my medication.I really was speeding because I wanted to go home to go to the bathroom though, and a cop is the last thing I needed in time like that.