I was recently reminded of a picture I saw when I was traveling with my wife and a friend in Italy in the Spring.  I think it was in Bologna, but we had been traveling for about a week and needed to wash our clothes.  So we found a convenient laundromat and started to do so.  Everything looked more or less like the laundromats I've used in the United States, except all the directions were in Italian, there was a vending machine that sold beer, and we found the an instructional image (attached below) placed prominently on the wall.  I can only assume they've had trouble with people stripping their clothes off and washing them.  Weird.