glass of water/bed wetting prank

Ok, first my appologies if this has been asked/answered before.But I did the searches and came up nada. So here goes.

I’ve heard since I was a kid about the ole’ “stick someone’s hand in a glass of warm water while they sleep and they’ll wet the bed” prank.
Is this actually true? Seems unlikely that merely having a wet hand would induce such a thing.

Our own Cecil wrote a column about this very subject:

Why does putting someone’s hand in warm water make them go to the bathroom?

I’ve got a beautiful picture of this prank in action if anyone wants it sent to them.

-LabRat

They just did it on Malcolm yesterday on the tube. Threw some water on the kid to make it better.