I used to believe women would stop being potty-trained after a certain age because I saw all these commercials for 'diapers' (actually sanitary napkins).
A childhood belief about weeing and pooing

others believed things like this
- Adult diapers feel and sound just like baby diapers but dont have the cool prints on them— jakjflkaj
- I used to think people had a "potty mouth" if they had been drinking out of the toilet.Anon
- My brother used to be scared to poop in the potty. He thought that he was pooping out his bones.— Lillyth
- I thought if 3 cards stopped at a 3-way stop sign then they had to stop forever until Christmas.Anon
- When I was young, I used to belive that
if you pushed the stop button in the bus it would stop for good.— Tom (Norway) - I used to believe that commercials would only go away when you bought the product that was being advertised.— Hayabusa