There's actually a proper name for sticking things down your uretha, but I'm buggered if I can remember it or be bothered to look it up.

I have to say, every mention of it I've ever heard has ended badly...from Mr.Pencil above to some guy sticking a thin necklace chain down there or the guy who's girlfriend stuck a spaghetti strand down there, and the idiot left it in there overnight, only to wake up and find that it wasn't quite as flexible as when it was freshly cooked!