What is your tailbone for?

If your collarbone is there to keep your shoulders on and your shins give you somewhere to hang your trousers, what is your tailbone for? That's the question posed by Dr Leonard Skynard of the Museum of Groovy Piccalilli in Reykjavik and after five years of super-advanced number crunching he now has the answer.

"It's to stop your spine falling out," he told us. "The coccyx acts as a kind of endcap which keeps your vertebrae in place. Without it your backbone would just drop straight out through your arse. As a side note I'd just like to add that we suspect that early man developed elbows so that he could flap his arms about and pretend to be a chicken, but you really shouldn't quote me on that."

We asked Dr Skynard if he had anything else to tell us about this astounding revelation. "I think I've probably said enough," he said.