Travis Bogumill, a construction worker in Eau Claire, Wis., was shot with a nail gun that drove a 3 1/4 inch nail all the way into his skull, and the only difference he can see is that he`s not quite the math whiz he used to be.
A co-worker accidentally bumped his head with the gun, and the nail went in so deep that the only thing visible was a small hole in Bogumill`s scalp.
He remained conscious, turned to his co-worker and said, "You just nailed me in the head," Bogumill recalled. He said, "it felt like somebody was smacking my head repeatedly with a hammer."
Doctors told Bogumill that he shouldn`t have been able to walk or talk after the accident, and that they`re baffled why he wasn`t knocked unconscious.

The nail lodged in an area of the brain typically involved in processing math according to Dr. John Lamoureux.
"You could give me two two digit numbers and I could multiply them within seconds in my head. But now you give me a piece of paper and multiplying 56 by 23 is still difficult," Bogumill said.