I think I must have once followed my Mom to the bank while she got something out of a small safe or something when I was young, because I believed that the way banks worked (having never gone with her to the bank before, and not going with her again later) was that everyone with an account had their own locked drawer. You'd go to the bank, then someone would take you to a room where there were walls and walls of little drawers, and you kept your money in that drawer.
When she explained it to me a bit, about how banks will give your money to other people, but they keep track of how much money you have, I figured that they just had a gigantic safe (with a huge combination lock on the front), like in cartoons, that was just piled up with money tossed everywhere. When you deposited money, they opened the door and threw it in. When you withdrew money, they went into the safe and got the money you asked for.
I still thought it was mean that they gave your money away, though.
A childhood belief about money

others believed things like this
- I used to believe that a bank was a place where they give out money to peopleAnon
- I used to believe that banks were owned by rich people who gave away their money.— Lyssa
- I thought it was against the law to carry around a lot of money unless you were putting it in the bank.Anon
- i used to believe that if you were broke that you could go to the bank and get money for free!— Karianne
- I used to believe that as long as there were checks in the checkbook, there was money in the bank.— Michelle
- I used to belive that if you went up to an ATM it would just give you money out that is not your own money.Anon