When I was a little kid (like 3 or 4) I thought the green arrow pointing forward on a stoplight meant for the car to flyup into the sky.
A childhood belief about traffic lights

others believed things like this
- Street signs with the upward pointing arrow was for airplanes. — Tammy
- i used to believe that red yellow and green meant "ready, set, Go!" on traffic lights..— cabagona
- I used to think that aeroplanes were called "arrowplanes" because they were shaped like an arrow.— Eduardo
- I used to believe that the exhaust fumes coming from a car were actually what pushed it forward like a rocket — rocket car
- i believed that little men sat in the back of vending machines and pushed the sweets forward.— rachael
- I believed you had to color all the dinosaurs in coloring books green because all the dinosaurs WERE green.— Betty