I used to see the airliners high in the sky on a clear sunny day in the summer time. They were leaving a vapor trail behind. I didn't know about vapor trails. I thought that the plane was so high that it was scratching the top of the sky and leaving white marks.
A childhood belief about aeroplanes

others believed things like this
- i didn't beleive this, but a kid my sister knew thought if he screamed in a really high voice, he ran faster.Anon
- I thought that exclamation marks were actually "explanation marks", since they explain how you pronounce it.— superoid
- i once thought that if you jumped high enough in the air, you'd get stuck!Anon
- I thought that wars had to last four years... just like high school and college.— A. Falk
- Until I was in High School, I really thought that the "underground railroad" was under the ground.— S
- Until junior high school, I thought Monty Python was a wrestler.— Jamie