I used to think that it was illegal to carry a very large sum of cash on your person unless you're on the way to the bank.
A childhood belief about police

others believed things like this
- I thought it was against the law to carry around a lot of money unless you were putting it in the bank.Anon
- We would drive by UNION BANK here in California and I would say "Onion bank!" My Mom would bust up laughing.— BINGO
- I used to think that Legal and Illegal meant the same thing (illegal)— Dhruv
- I used to believe the bank "scottish widows" was run by widows, and only gave bank accounts to widows.— Angelmouse
- I used to think the lady behind the cash register at the A & P got to keep all the money in the drawer.Anon
- I used to believe that 'bankruptcy" meant that you were actually going to rob a bank — Mindy