If there was ever a good context for Wii jokes, this is it.
This German campaign against drunk driving gives a new meaning to the word joystick:
"The Piss-Screen (the site's dead) is a pressure-sensitive inlay for urinals. The game is displayed on a screen above the urinal. We designed a driving game in the style of Need for Speed." The game would end with a crash and display a message to the effect that the player should take a cab home.
There was one other game art project with the similar input mechanics last year, only then the display was inside the urinal.
Anyway, here's a video of the gameplay: