My dad told me when I was a kid that if you don't dim the "high beams" when a car is coming towards you it will make them go blind. I remember thinking why do the car companies make things that send people blind. I'm sure I missed the temporarily bit to my dad's sentence.
To this day, I find it difficult to use high beams as I just might send someone blind.
A childhood belief about cars

others believed things like this
- I used to believe that blind dates were dates for people who were blind.Anon
- my sister used to believe that glasses were for blind people.— Lauren
- I used to think that blind people always had their eyes closed.Anon
- When i was younger i used to believe people blind had no eyes.— Kenza
- I was told that if you went to brd with your sox on you would go blind.— Frank L
- i used to think that if you were blind you had to have your eyes closed. Anon