When I was around 4 or 5 yrs old I thought the metal buttons on the pocket corners of jeans were rivets, and couldn't understand how adults could walk around in them not being hurt by all the rivets that were screwed into their thighs and buttocks.
A childhood belief about general

others believed things like this
- The song "Reverend Blue Jeans" turned out to be "Forever in Blue Jeans." Who would have believed that?— music lover
- I used to believe that Metal music was when a bunch of people would bang metal together to make noise. Ha ha.— Kassandra
- Since my father had a deep cleft in his chin, I thought he was growing a tiny buttocks out of his face.— Rick
- I used to think that poop was stored in your buttocks and that's why they're squishy.Anon
- i used to believe that people's buttocks were plump because of the poo filled in it— Diesa
- I used to think that boysenberry was poisonberry and couldn't understand whay anyone would want to eat it.Anon