When I first heard the word "plebiscite", I guess because of its resemblance to parasite, I thought it must mean some kind of nasty little critter. To this day, I never hear the word without thinking of some small but rather fearsome animal.
A childhood belief about speaking

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
- i used to think the word "friendship" meant a special kind of rocketship that you went on with your friends.— chips ahoy!
- 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
- As a small child I believed that the word was "nakeup", finally I found out that it was actually "makeup".— Hannnah P.
- I used to think the word fever was just another word for giraff— Marshall m