When I was little, I used to watch "Underdog", and on that cartoon was a character named Polly Purebred. Being around five years old, I had no idea what a pure bred dog was, and thought that it was weird that Polly Purebred was named after some kind fancy bread.
A childhood belief about cartoons

others believed things like this
- I thought that polystyrene was pronounced 'polly-STEE-LEE-an'.— Polly Stairiin
- My Sister Once Said That Polly Pocket Was A Real Girl That Got Shrunk To Doll Size And Turned Into A Doll.— Jamie
- when i was growing up i had two imaginary friends. One was named Jennifer, the other was named Onion.— Tessica
- I used to believe there was a Russian Leader named Garbage Trough and an Arabian named Are A FatAnon
- The boy in my class named "Sahand" must have a sister named "Safoot".Anon
- I used to wonder what kind of insect "uncles" were named after.
I had "Ants" figured out.— Kimberly in AZ