I remember as a kid watching TV with my mom and an ad for Depends came on. I asked what they were exactly and she said they were like diapers for adults. At the time I didn't know that incontinence was a thing, so I figured some people just never got potty trained and had to wear diapers their whole life.
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 thought cartoons were for kids and "real-life programs" for adults.— Ichigo
- I used to think people had a "potty mouth" if they had been drinking out of the toilet.Anon
- I had never seen a dove in real life before so I figured they were just mythical beings from the bibleAnon
- i used to belive life had already happened... i was just watching my judgement— jmsiona
- I used to believe that clothes got smaller if you didn't wear them very often.Anon