I have a little cousin who for the longest time was convinced that a "pervert" meant a dead fish... it sure was funny to hear her call her younger brother a pervert whenever he did something stupid... "Gabe, you're about as smart as a pervert!" ... I guess the statement is still a viable insult, though
A childhood belief about speaking

others believed things like this
- For the longest time I thought that tapioca pudding was really fish eggs in pudding.— Liz
- I used to believe that when my fish died and floated to the top, it was playing dead.— Alycia T
- I used to believe that a street sign that read "Dead End" meant that there were dead people buried there.Anon
- I thought for the longest time that a No Standing traffic sign meant no person should stand near that sign.— Shannon
- As a kid I thought dogs stupid but funny and that cats were evil demons. — Gemini
- My sister ate fish food one day and she was convinced that she was going to grow scales— leohauoli