Whenever I got in major trouble, my dad would always shout, of course, "You're grounded!"
I thought he made up that word, so about a year later when I heard it on TV, I thought my father must be famous, his new word was popular enough that it's now being displayed on television!
A childhood belief about family

others believed things like this
- In first grade, I thought that if I've never heard of a word before, then it wasn't a word.— Destiny
- When I was young, I heard the word 'minion' for the first time and thought it was a miniature onion.— Karin
- For years I heard the word "pedophile" and thought it meant a pedicurist's tool.— Lauren
- When I was younger I thought I had made up the word "nipples" and "thinga-majigger" — Amelia
- I used to think the word fever was just another word for giraff— Marshall m
- I used to think that the word blurb was a noise that people made when being sick. Bluuuggghhh.— Natasha