Slowly, my lower jaw started to vibrate, and then it got pulled in all directions, resulting in my upper teeth and the lower ones hitting each other rapidly, almost like the motions when trembling, but the force can range from light to stronger. After a while I would force myself to get my jaws back in place. Then the muscle on my face got pulled in all different directions. I could be showing my teeth one minute, and face muscles all twisted up the next. Sometimes my lower jaw got pulled further ahead than my upper jaw. The force can be strong that I worry about breaking my jaw. My face must look like something you see in horror movies. A few times, both my lips went upward like the pig face so tightly. hahaha. I kept thinking whether or not I was possessed. But I was more intrigued than scared. A few times, I felt like I was about to be sucked away by a giant vaccuming machine near my head. My facial muscle is pull so tightly to one direction that my upper back actually arch up involuntarily.