When I was young I thought that the "Danger: High Voltage" signs meant that there was voltage at a taller altitude, not that the voltage was strong. There was a utility pole in our yard so it made since until I saw a ground box and thought "Well, that voltage isn't very high?"
A childhood belief about reading

others believed things like this
- Until I was in High School, I really thought that the "underground railroad" was under the ground.— S
- I used to believe that grown-ups got scared because they were so high off the ground.— Sammy
- When I was young, I honestly believed that I would die before I reached high school. Anon
- i once thought that if you jumped high enough in the air, you'd get stuck!Anon
- I thought that wars had to last four years... just like high school and college.— A. Falk
- Until junior high school, I thought Monty Python was a wrestler.— Jamie