When my sister was little, she didn't know what granddaddy longlegs were called, so when she saw one in the tub, she ran off screaming, "There's a chicken leg in the bathtub!" She called them that for years.
A childhood belief about creepy crawlies

others believed things like this
- I used to believe that all meats were chicken. I called everything chicken. :)— Girlfloyd
- I believed that the breed of dog called Boxer was called that because they could stand up and box.Anon
- my sister and i used to think sideburns were called "hash browns."— ginny
- When I was little - before we learned cursive - my sister and I called it 'real writing'. — Monty
- My mom used to think "preschool" was called "pretty school" until a few years later.— Molly
- I used to believe that people from Holland were called "Hollish", like people from Poland are called "Polish"— Sally