When I was a little girl I knew that the earth rotated on it's axis. I thought that the earth made a complete turn every day and that while it was turning everything was upside down ! Since this didn't happen during the day I would try to stay awake all night long hoping to see everything upside down. When I would wake in the morning I'd be very disappointed because I missed it !
A childhood belief about physics

others believed things like this
- I used to believe that the wind was from the earth turning.Anon
- i thought if you dialed 666 you got upside down policemen.— rufus
- i used to believe that a volcano was an upside-down UFO in disguise— Sally
- I used to believe that if you ate a grape upside down it would come out your nose.— Cath
- When I was a child I used to believe that if some shoe was upside down, someone in my family could die.— Camila C.
- I used to believe that if you held a Guinea pig upside down, it's eyes would fall out.— james