Just sit and watch this!,..think of nothing else!,..you will go mad in time. http://blueballfixed.ytmnd.com/
Flipping heck Philip my eyes have gone all wonky!! I tried to follow the balls as they whizzed around but almost ended up with a migraine. I think I need to lie down in a darkened room after that. I don't think it's driven me to madness yet though do you?