A common one due to TV shows. I thought those Stork birds used to carry babies and drop 'em off and your door.
A childhood belief about getting pregnant

others believed things like this
- Until i was 7,I believed that the stork actually delivered babies.
I was a very stupid kid....— DumbKid - i used to believe "eaves drop" was actually "ears drop"— sophie
- I used to think that women had a secret door on their stomach that babies opened when they were bornAnon
- i know that this is not very original, but i used to think that baby's came from the stork.— J Dog
- I thought it was against the law to carry around a lot of money unless you were putting it in the bank.Anon
- When I was a child I used to believe children were being brought by stork.— Matteo