Urinal gaming
 

A game in Germany has been devised to test how drunk you are. Only thing is, you play it with your wee. The Piss-Screen was devised to help reduce the number of drunk-drivers on the road and has been placed above urinals in pubs. While urinating, you play a driving game and move the car with the direction of your urine. Crash the car and the game suggests you're too drunk to drive and should order a cab!

http://www.virginmedia.com/games/fea...stories_01.php

that seems pretty interesting.