I got lockjaw from yawning and had to go to the er. The nurse seemed a bit skeptical that it was from yawning. When my nurse doesnt believe I got lock jaw from yawning. Woman taken at the ER for getting lock jaw while yawning, and the nurse was jokingly teasing her that there could be a different reason how she got lock jaw, and they laughed, then after she got sedated, and when she was discharged she went and ate phoa with her friends