I used to believe that we only wore knickers/underpants in case someone pulled down our trousers! I'm quite amused by this former belief of mine and I still laugh about it!
A childhood belief about appearance

others believed things like this
- I used to belief that the Muslim women who wore their garment wore it because they were bald.Anon
- I used to believe that God was the Incredible Hulk - he was green and muscly and had purple trousers.— Emma
- My friend's sister believed the lyrics to Gazza's "Fog on the Tyne" were "Fog on the dinasaurs mine all mine"— Suzanne
- I thought that if you wore the colour red, you would go yo hell. — Tone
- I used to believe that hair was only for men, and girls wore wigsAnon
- I used to believe that people who wore glasses were very smart.— Anonymous