I thought I'd share this tale with you...
Last week I went to watch a football game. We won, everyone was happy. I went to the loo before the walk back to the car.
I'm casually having a wee when a small boy stands next to me at the urinal. He's carrying a bottle of pop, which he needs to put down so he can pee. He places it under the urinal (not the cleanest place!) but as he bends down he almost interrupts my stream with his head. I shuffle a bit away from him, but realise my wee is splashing back a bit. Onto the kids hair. He's totally unaware.... 
Parents: warn your children about the dangers of going under public urinals. It's your duty!!
BOL! As if!
You'd think the kid would have noticed. And I certainly never had to be told not to put my head in a stream of piss...