As a child I believed that when you put letters in a mailbox, they would magically find their way to the recipient by way of underground tunnels and chutes--operated by gnomes living deep underground. I thought that the earth's core was a series of tubes that connected mailboxes!
A childhood belief about in the street

others believed things like this
- I used to believe that fax machines worked by sending papers down underground tunnels. Anon
- I thought when i was a kid, that all mailboxes had tubes that brought your mail to the person u sent it to.— Andrew
- i believed that moles wore davy lamps on their heads so they could see underground— Omi
- For a very long time I believed that there were little men underground that changed the traffic lights!— Melissa
- I thought the underground railroad was actually a subway.— Greg
- When I was little I thought the london underground was a terrorist organisationAnon