When I was a kid, I used to believe that ducks walked across your face at night and poop, and that's where eye crusties came from. I used to try and stay up as late as I could to try and see the duck.
A childhood belief about sleeping

others believed things like this
- I always thought that duck sauce (from chinese restaurants) was duck poop.
— emily - If you pulled a face, and the clock struck on the hour, your face would stay in that position.— Jo V...NL
- i thought that "aromatic" duck was actually "asthmatic" duck.
poor thing...— rachael - I used to think thats rats put those eye crusties there while I were asleep— Maria
- My mom always told me if I made an ugly face it would stay that way forever.Anon
- I actually asked my mother if mixing girls' poop and boys' poop would cause an explosion.— kraine