We may never really know how this started, but it's caught on. It came to me via a dear friend with a most peculiar sense of humor. I bet you'll be hearing about him again, so I might as well introduce you: Sean, say "Hello Everybody!" Back to wharrgarbl, this is one hypothesis about its origins so far. But the important thing here is to get in touch with what the picture evokes: see it, feel it, get completely soaked. Thank you puppy, I can't stop laughing.