When I was a child I used to believe that if you yawned at the same time as someone else that it meant you both went to bed at the same time.
A childhood belief about sleeping

others believed things like this
- i used to believe that if you burped and yawned at the same time your eyes would pop out— kelso
- I used to believe that if I stood at the top of the stairs, closed my eyes and yawned, I flew down them— Sam
- I used to believe when I was a child ,
during xtmas time animals speak like humans after 12 pm— lan - I thought for the longest time that a No Standing traffic sign meant no person should stand near that sign.— Shannon
- I thought if someone worked full time it meant they worked 24/7 and never did anything else!— andalite
- I used to believe that everytime a balloon was released , it meant that a child had recently died.— Samantha