Ever since I was a baby, I had a picture of a children's book villain, Cuca, on my pillow.
Until I was 15 I used to call everyone's pillow Cuca, because I always thought that was another word for it.
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
- i used to think that the word 'clothes' was the plural for 'clo.' so i'd call a sock or a shirt a clo. — jessimocha
- My niece used to call Marmite Falloy! Where she got the word Falloy from nobody knows— Russ