The picture you see on the left is of a guy in the US who managed to get a nail embedded in his skull without noticing it. He was using a nailgun and it backfired, shooting one nail into the wood behind him and the other one apparently into his head. He didn't notice anything for a few days, apart from a slight ache in his jaw. He thought it was a tooth ache. Imagine the surprise his dentist got when they took the X-ray. For the complete story, check here.

"The doctors said, 'If you're going to have a nail in the brain, that's the way you want it to be,"' she said. "He's the luckiest guy, ever."

I bet the guy feels really lucky. If luck consists of having a nail shoved in your brain, then I'd rather be jinxed.