My dad had a little beer belly, and I noticed that his belly button used to gather lint. I'd periodically remove it, and told him that I was pretty sure that was what belly buttons were for--collecting lint.
A childhood belief about belly buttons

others believed things like this
- I used to think your belly button was there to collect the lint of your shirt!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 think that if i touched my belly button it would unfold and my belly would be inside out forever. Anon
- I had an uncle that told me that we had belly buttons for putting salt in while we ate celery in bed.— ainmama2001
- i uses to believe that boys wee'd out of their belly buttons.— boys and toilets
- I used to believe that babies came out of belly buttons — kels