When I was little, I watched Cruella DeVil on 101 dalmations call her minions "morons". I didn't know what that meant, so I looked it up in the dictionary. It said something like "an adult with the mentality of a 12 year old".
I got in a bit of trouble when, after a boy in my class did well on a test, I kindly called him a moron. Being 8, I thought this was a compliment of the highest sort, saying he was as smart as a 12 year old.
A childhood belief about swearing

others believed things like this
- Abba - Happy New Year
"Kangaroo year,
Kangaroo year..."— Santa Puncher - I used to think that dalmations were baby cows.— Marshmello Da Strawberry Cow
- I use to believe that everyone in Florida didn't go to school because it was warm all year around.— Julia
- i used to think that if i didn't celebrate my birthday each year my younger sister would catch up with me— q
- I believed that if I looked too long in the mirror admiring myself the Devil would appear.— Paul Elletson
- I didn't mind eating lambs brains when I was a kid because I thought it would make me smart.Anon