Damn, this article made me smile when I read it today.

http://www.theregister.co.uk/2007/08/28/hand_theft/

Specifically: "He explained: "It was the first time I had left my hand on the bike. I thought I was only going to be 10 minutes, but I ended up staying for two hours."
Now, I wonder what would distract you from a quick 10 minute "hi how you doing" stop, to something that would take a couple of hours. And would make you forget your hand.

:P

Still, you have to feel for the guy - damn expensive hand!