A laid-back, friendly fellow known as "the Gentleman" is beloved by all at a bar in Chihuahua, Mexico. All, that is, except the guy who stabbed him in the freakin' head with a pair of scissors.

Do you have splitting headaches? Yes, sure, they may be migraines, or, you might have a four-inch knife, buried in your brain, for four years. Li Fu, a Chinese gentleman who had been complaining of headaches, recently discovered that the source of his pain was, yes, a four-inch knife, "stuck in his brain for more than…