I used to believe that potatoes grew inside my Belly Button - i can't remember why - but i believed it for a long time so kept on putting my finger inside my belly button making sure nothing was growing in there.
A childhood belief about belly buttons

others believed things like this
- I used to believe that If I stuck my finger really far inside of my belly button I could touch my insides.Anon
- I used to think that if i touched my belly button it would unfold and my belly would be inside out forever. Anon
- I used to believe that belly button lint came from the *inside*. Why else would it always be the same color?Anon
- I used to believe that my belly button was for putting salt in while in bed, eating fish and chips.— Julie F
- My mom says that when she was growing up, she thought that her belly button was where her skin came together.— Dana
- You couldn't have your belly button covered for too long or it would be harder for you to breathe.— Jess