When I was little sow bugs, the little gray bugs that curled up when poked, were called rolly-polly's. I didn't know when I had first heard them called that, so I figured that I had invented it. I was very impressed that a word I invented was so popular with everybody.
A childhood belief about creepy crawlies

others believed things like this
- I used to think the ottoman was called the "autumin" because it was invented in autumn. I Anon
- I used to believe that I actually invented the word "excellent".— poop jacket
- Up until 8th grade or so, I was convinced that I invented the word "Fart"— Jonah
- I made my bed everyday as a kid because I believed that if I didn't then bugs would get in it.Anon
- I was about 6 and thought my family invented the fart because I never heard anyone outside my family do it.— Bob
- When I was little, I thought the Beatles really were bugs.— Spongekid