My parents tried to explain to me what is a spark plug in a car. After that I believed that it's a candle because it ignites the fuel. And that if you open car's hood you may accidentally blow it.
When we went on a trip an it was raining, spark plug somehow stopped working when big truck splashed us with water. It was totally logical for me because i imagined little candle being doused with water.
Believed it for soooo many years.
A childhood belief about cars

others believed things like this
- I used to believe that if i splashed water on the wall during a bath, the water would turn into spiders— justin
- If you left a plug socket on with no plug in all the power would run outAnon
- I believed that I had a fake right big toe, having lost my real one in the plug holder (thanks Helen!)— Mike
- I thought that when the lights went out, putting a candle behind the tv would make it work :)— Ricky
- when i was a kid i used to believe that the water drops was racing on the window when it was raining outside — Emeline
- I used to think that when the power goes out, the water also stops working.Anon