Lawmakers have been known to split hairs. Splitting tongues, they're not so crazy about. So David Miller, the state representative from Calumet City and a practicing dentist, is serious when he talks about recent legislation he's introduced. Miller, a Democrat, is sponsoring a bill that would all but ban what has become the latest craze in "body modification"--slicing the tongue in half to create a reptilian appearance. It's a practice akin to body piercings and tattoos. But detractors like Miller say it carries risks of infection and even death if not performed by licensed medical people and surgeons. That's why...