I grew up near Bisbee AZ which is an old mining town. In the center of the city is a HUGE pit kinda like a mini grand canyon, well my uncle told me that they had dug out all that earth to make the penninsula of florida. Seemed reasonable to me at age 10 or so. The next time we drove by it I said "did you guys know......" my family let me go on talking about it for a while before informing me I was a gullible moron. My family is mean.
A childhood belief about landscape

others believed things like this
- I was convinced that Indians had dug the Grand Canyon.— Tom Sackett
- I once thought a vent in my hotel room led down to the center of the earth.— flarn2006
- When I was little my uncle had a huge adams apple. He told me he'd swallowed a marble.— Stacey
- I was about 6 and thought my family invented the fart because I never heard anyone outside my family do it.— Bob
- I used to think that in the song"Family Affair, they were saying "It's a family of bears!"— Wayne Huffman
- I used to believe that our family was the only family that farted.— Teri