Like seeking a thrill or a high in traditional ways (as in illegal drugs or alcohol), people who eat glass have a legitimate addiction as well. The addiction is called Hyalophagia or hyalophagy and is typically made public in stage shows. You may know the more renowned glass eaters, Preacher Muad'dib Todd Robbins, Matt the Knife, Josh Routh and Michel Lotito. Unfortunately, some people like the man in the video above carry this act further and eat glass on an everyday basis.