Prior to the World Cup Soccer matches in Germany, somebody invented a small "goal" made from green mesh firm plastic, and a little orange ball was suspended from a wire mid-goal, within the urinal.
If you pissed on it steadily enough (you must chase it, the urine stream makes it move about) it would turn colour.
Sort of like one of those games at the local fairs. Water pistol marksmanship wins you a Cupe Doll.
I didn't win anything. I did, however, load up on a fair amount of really nice 'weissbier' to practice regularly with.....