LITTLETON, Colo. - A dentist found the source of the toothache Patrick Lawler was complaining about on the roof of his mouth: a four-inch nail the construction worker had unknowingly embedded in his skull six days earlier.

[...] "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."

[He says] he'll change his line of work.