When my mom was young her and her family would always go camping and pass signs that said "falling rock." My grandfather told my mother and her siblings that falling rock was the ghost of an indian princess and if you looked real close maybe you could find her. My mom believed this up to the age of 17. Until one day when she was driving with some of her friends and started to tell everyone to look for falling rock.
A childhood belief about road signs

others believed things like this
- I used to look for an Indian along the roadside because of signs that stated
"watch for fallen rock"— pam petry - My friends and I used to believe that if you planted a rock, it would grow a rock tree. Anon
- I used to believe the the Elton John song, "Crocodile Rock" was about a Crocodile, named Rock.Anon
- I used to believe that if you dreamed you were falling and you hit the ground, you'd die in your sleep.— Knoot
- I used to believe as a child that t-storms (aka thunderstorms) where actually tea bags falling from the sky.— Samantha
- I used to believe that sattelite dishes were used to shot down falling meteors that fell to earth.Anon