Found this on the Barenaked Ladies Blog. The picture is funny... but it's the caption they wrote that made me laugh out loud...
"This Is From A Real European Tour Bus
It advises not to wear one's visor backwards whilst urinating."
(While you're there, check out their podcast. It's a good one - even if you're not a fan, it's interesting to be there every step of the way as they go through the whole process of creating and recording their upcoming album)