For years I heard the word "pedophile" and thought it meant a pedicurist's tool.
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 fully believed, up until about 6 years old, that the word 'accident' was a noun that meant 'burnt toast'.— Karl Goetz
- I used to believe that "nuptial" was a naughty word. I thought it meant nipple. XD— Sara Hagen
- When I was young, I heard the word 'minion' for the first time and thought it was a miniature onion.— Karin
- When I first heard the words "flea market", I actually thought it meant "selling fleas".Anon
- my husband believed, until recently, that the word "several" meant seven of something. — sheryl