When I was very young, my older sister told me that you had to sleep on the same pillow every night or your head would fall off. She even said that once, her pillow accidently got switched with another pillow, and she had to get surgery to reattach her head!
A childhood belief about around the house

others believed things like this
- I used to believe in Perez mause when my teeth fall, I put them under the pillow to see what happened— AyrtonZ01
- My sister used to sing Kylie's "cheese on my pillow", somehow tears works better.— Tom
- 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
- my sister when she was little thorght head lice tried to borrow into her head to get to her brainAnon
- someone could unscrew my belly button, and if they did, my head would fall offAnon