i used to believe that the green man who tells you when to cross the road was a martian, hidden somewhere - like in a tree - who controlled the traffic lights.
A childhood belief about road signs

others believed things like this
- when i was about 5-8 i used to believe that oompa loompas lived in traffic lights and controlled the lights!!— ~wierd ~
- I used to believe that God controlled the traffic lights. He would decide when it was everybody's turn to go.— Amanda
- i used to beleive that elves controlled traffic lights.— Jessica
- When I was little, I was thought that little elves controlled the traffic lights..— Rosie
- I thought traffic lights were controlled by little men who lived inside them. Anon
- i used to believe that the green arrows on the traffic lights told you which way you had to go to get home.— Helen