You know how household products often have a "First Aid" label telling you what to do if someone gets it in their eyes or swallows it? Well, I used to think the "First Aid" instructions explained how to convert the product into some sort of medicine. You would do this if there were a war and you couldn't get to a doctor.
A childhood belief about around the house

others believed things like this
- I can remember thinking that is I hid my eyes, and couldn't see anybody that they couldn't see me.Anon
- I used to think you had to be an adult to drink household chemicalsAnon
- Until I was 7, I used to think bananas were a dairy product.— Amplexor
- I used to believe that people who were lactose intolerant could not consume ANY dairy products AT ALL. — Marideth
- I used to think that if I closed my eyes other people couldn't see me.Anon
- I used to believe that commercials would only go away when you bought the product that was being advertised.— Hayabusa