My boyfriend ( at a young age ) thought that when a girl has an orgasm, that she bleeds. He somehow thought a girl's menstrual cycle and her orgasm were linked. Which made him also think that when a girl gets her period, it was supposedly a very sexual thing as well.
A childhood belief about periods

others believed things like this
- When I was younger, I saw Madonna's video for "Material Girl". I thought she was singing "I'm a Cheerio Girl"!— Greg
- I always thought instead of saying "Im a material girl" Madonna was saying "Im a cheerio girl".— Tiffany
- I always thought only boys could orgasm. — kg
- I thought “Orgy” was slang for orgasm until I looked up the definitionAnon
- I used to think that a menstrual cycle was a type of bicycle and i wanted to ride one.Anon
- I used to believe that the words to Michael Jacksons "Liberian Girl" were "librarian girl".— Paul