He really does have a weak jaw. Most people use the term "the good side" when they try to get photo's just right. O has a habit of keeping his right jaw off camera as much as he can. He also has a very easy to see twitch in that jaw when he is angry. I think he grits his teeth at those times or it could just be a nerve but it is obvious if you look for the little body language that most people never notice but that speak volumes. I agree that he isn't the leader America needs for our future. His entire act about being such a great guy who is so concerned for the kids makes me tired to see it since it is so phony.