A friend and I, when we were about eight years old, if we found ourselves sitting in the car stopped at a traffic light, would chant "Red light, red light, turn turn GREEN!" to make the light change. If it didn't change immediately we'd start in with "Please? Pretty please? With a cherry on top?" until it changed.
I'm not sure if I actually ever believed that it was working, or if I knew in the back of my mind that by the time we got impatient and started the ritual, it would be time for the light to change anyways. I strongly suspect that she really did believe in our powers of persuasion over traffic lights.
A childhood belief about traffic lights

others believed things like this
- My dad could change a traffic light from red to green using our garage door opener.Anon
- I used to beleive that little drawf men were inside each traffic light, making them change colors. — alisha
- I used to think that on day light savings time you had to stay up till 2:00am to change the clocks! — Sandy
- that the green traffic light turned blue when it was off— Kriket Evens
- When i was little i always thought there were little men inside the traffic lights changing the light— Kiley
- I used to believe that the yellow light in traffic-lights meant Go Faster!— M. L. E.