I always wondered if he had TMJ syndrome (Tempro mandibular Joint syndrom) People that have that have difficulty opening their mouths. It drove me nuts as well!CornHunka said:Besides Callahan's spitting, the nervous tick he did with his mouth needed to be stopped, even if he had to get counseling in order to quit it. It was one of those things that you didn't notice until someone pointed it out to you that bothers the $hit out of you.Wally said:It's a lot better than Callahan spitting on the field every 5 seconds. I even wrote him a letter asking him to stop spitting on national TV.