Chattering Jokes

A man got a severe fit of shivering. They put quilts and blankets on him; put a hot water bottle in his bed and lit a fire in his room. But he would not stop shivering. Then someone noticed that while the rest of his body was shivering, his teeth were not chattering. "How is it that while every part of your body is shaking, there is no sound of your teeth chattering?"
The man opened his mouth, bared his gums and explained, "Because my dentures are in a glass of water."