This is something that I remember from many years ago. My mom probably remembers it too, but, luckily, she doesn't mention it often. This might be a little long.
When I was three or four years old, my mom told me that we were going to go to a farm. The only farm (well, farm-type thing) I had ever been to was a place where they sold fresh produce, had a playground for kids, and, my favorite part, they sold ice cream. Naturally, I was very excited and I thought there would be ice cream at the farm. When we got there, it was sort of like a petting zoo, and we each got some animal food to give to the farm animals. I don't remember much about the animal food, but it looked a little bit like birdseed. Using kid logic, I concluded that the animal food was weird-looking ice cream, and tried to shove a handful of it into my mouth.
My parents had a good laugh about that one.
A childhood belief about general

others believed things like this
- I used to believe that if the ice cream truck was playing music, it had sold out of ice cream.— Deprived of ice cream
- As a kid, I thought ice came out the ice farm. Yes like Minecraft.Anon
- I used to believe that they shoot the chickens we eat one by one at the farm.— A
- In my youth,I was always convinced that my chocolate easter eggs came from my uncles chicken farm!— Jamsie
- My parents told me that when the ice cream van was playing music, it means he's run out of ice cream :(Anon
- My dad told me that ice cream vans only play music when they have run out of ice cream. Anon