Galah, the good people at darwinawards.com must have read your post.
Cut n paste from their site....
Planking! What the what? Turns out 'planking' is the peculiar practice of lying flat on your stomach in unusual locations, and posting the photographs publicly for all to admire your wit and skill. Poor poor Mr. Acton B., Brisbane resident and planking enthusiast. Sadly, Acton wasn't aware that balconies are the number one cause of gravity-related Darwin Awards. If only he had read our warnings...
The 20-year-old stretched himself out flat on the railing, face down and stiff as a plank, ready for his big moment. But when you're goofing around on a balcony, it's a fine line between fun and done. Natural selection nudged him over the line, and he fell seven stories to his death.
Planking is a growing craze that originated in Australia. Once again, the men down under have risen to the top of the zany crop. News reports are full of ludicrous quotes: "Police said they could not say if the fatality was Australia's first planking death." "A man was charged with allegedly planking a police car." "He told the Herald Sun he has planked naked."