I used to believe that it might be possible sometimes to land on your own shadow when jumping. I'd try this occassionally for a few years.
A childhood belief about physics

others believed things like this
- I thought the song Shattered Dreams was acutaly "Shadow Dreams" and wondered what shadow dreams were— Golgademon
- I used to think that
"The land of make believe"
was
"The land of baked beans."— Baked Bean! - I used to believe that I could outrun my own shadow!— Serge
- I used to believe my shadow was chasing me whenever I ran— Rose
- I thought the England was EDGE-land but england was ENG-landAnon
- every time I see a shadow thats not mine I freak out because I think It's a vampire— Dalton Anderson