There are times when you see things that are almost impossible to believe. Your brain vehemently resists the obvious interpretation because it’s just so bizarre. This, for me, was one of those times.
Pointer courtesy of Mr. Naughton.
It might be worth mentioning that I first saw this (and posted it) without actually hearing the sound. (I was on a machine that didn’t have any speakers on it.) In some ways it was even better silent, esp. the first time.