I'll never forget the "learn how to aim" lecture that my borther and I got as kids.
We couldn't keep a straight face....
I won't forget the restroom of a very nice hotel in Dresden, Germany. Glazed into the back of the urinal, just at the right hight was the image of a very realistic fly...
Who says the Germans don't have a sense of humor?
I remember a restaurant in NYC that had a sign in the restroom that said "We aim to plese. you aim too, please!"