1.   My teeth began playing ragtime, my knees a sort of counterpoint.

2.   My teeth began to chatter, and I regretted leaving my jacket behind.

3.   Her teeth began to rattle as she stared at him, transfixed.

4.   After a few minutes, the warmth of the blankets had diminished and my teeth had begun chattering again.

5.   His teeth began to decay badly.

6.   My teeth began making that grinding noise again.

7.   My teeth began to chatter.