Me and a close buddy did it several years ago when there was a blackout that lasted until the next morning in the city. It was a hot, humid summer night and he dared me to do it with him. So, we were in the car which was parked a few blocks from the lake that is near where I live. we both got butt naked and ran from the car to the lake. No one saw us as we ran into the water. Afterwards, we walked back to the car naked and wet. However, a car was coming up the street with their bright lights and saw us as we were near the car. Who ever was driving in the car had yelled out and blew the car horn in approval...lol