I used to believe that if I didn't hold my belly button in when I pooped it would pop out. Turns out I can poop just fine with out doing so.
A childhood belief about weeing and pooing

others believed things like this
- 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 think it was true that only ugly girls poop and I thought I was an ugly girl because I poopedAnon
- I'm black, so as a child I used to assume that white people pooped peach the way I pooped brown.— Rick
- babies come out of your belly button— Kit
- when I was a kid I thought that babies come out of a belly-button.— Ana
- When I was a kid my dad told me that if you unscrewed your belly button your bum would fall off.— Ann