A guy goes to the Doctors and says " hey Doc I got this really weird problem" Doc:"oh really, what's that then" ? Guy:"Well you know that song by Tom Jones,"My delilah" ? Doc:Yeah I do. Guy: "Well I can't get the song out of my head, hear it all day all night and even when I dream" ! Doc:" Ah, you have Tom Jones Syndrome ! Guy: " Oh , is that common then ! ? Doc: " Well,it's not "Unusual"