When I was younger my father told me if I slept with my head under the pillow the tooth faries would kick my teeth in.
A childhood belief about sleeping

others believed things like this
- I used to think that the tooth fairy puts you in a deep sleep before stealing your tooth/teeth.Anon
- I used to believe that in the tooth fairy took all your teeth and built a tooth city for her to live in!Anon
- My mother told me that the tooth fairy would only come if I brushed my teeth.— Dale
- when I was little I believed that if I put a white stone under the pillow with my tooth I make more moneyAnon
- My nephew refuses to put his tooth under his pillow in case the fairy burns him with her wand.— Nina
- I used to believe in Perez mause when my teeth fall, I put them under the pillow to see what happened— AyrtonZ01