When I was young I would play grocery store in our family's pantry. I realized one day they list the ingredients on the labels of food products and assumed this was a recipe. I couldn't for the life of me understand why you would put the recipe of your product on the back of your product, and why, for that matter, my mom would buy it instead of just making it herself!
A childhood belief about general

others believed things like this
- Until I was 7, I used to think bananas were a dairy product.— Amplexor
- I used to believe that commercials would only go away when you bought the product that was being advertised.— Hayabusa
- I used to believe that comercials are evil beings that would keep appearing until you bought the product.Anon
- I used to think that "elbow grease" was an actual product of kitchen or surface cleaner.— Carrie
- I thought brown paper grocery bags would fit more than plastic grocery bags.Anon
- I used to believe making a cake from scratch meant using a box mix rather than buying a cake from the store.— EZ