I used to believe that there were male and female rainbows. Male rainbows were shaped like a curved arch (what you usually see) and female rainbows were shaped like a ribbon tied in a bow. Of course, female rainbows were very rare.
A childhood belief about weather

others believed things like this
- I used to think that to desex an animal meant to turn it from a male to a female or female to male.— Phil
- I used to believe that rainbows got scared and went away if you went outside— Kate
- I used to believe that rainbows were lights that humans sent to the sky— Julia
- I used to think oil patches on the roads was dead rainbows— Si
- When I was a sprog, I used to think that Rainbows were painted in the sky by magic fairies— Jojo
- I used to think that oil drops on wet road were rainbows drops that have fallen to earth Anon