My sister told me that turning the light switch off and on repeatedly wasted electricity, and that I should just stick with one or the other.
Obviously this translated in my mind to the idea that turning it on and off used electricity on top of what teh light already used, so you actually used less energy if you just left it on.
A childhood belief about around the house

others believed things like this
- that God lives in the roof of our church and makes electricity to light the chandeliers— M
- I used to believe that you could not make the car turn left or right without turning the blinker on.— Christy Shane
- I used to belive that if we could find the light switch that controlled the sun, we could control the world. Anon
- I used to believe electricity came from lightning.Anon
- i used to believe lava and water made electricityAnon
- i used to believe that the no outlet signs meant that noone in that section of the street had electricityAnon