When I was about 8, there were ads in magazines and on billboards,and they showed a girl sitting in a corner on a street, looking a bit sad for some reason. It said: "When you get your period ... (can't remember the rest). Because that girl was out on the street and looking sad, I believed that getting your period was the same as running away from home.
A childhood belief about periods

others believed things like this
- my mom believed when she was little that a street sign that said don't walk meant you better run.— Sara Mclen
- i believed that thunder and lightning came out of the alley across the street from my house.Anon
- I used to believe that you had to be on your period to get pregnant........— Tricia
- HA! I used to think when you got your period, you would just pee blood...I wish it was like that...if only.Anon
- When I was younger, I saw Madonna's video for "Material Girl". I thought she was singing "I'm a Cheerio Girl"!— Greg
- I used to believe that the words to Michael Jacksons "Liberian Girl" were "librarian girl".— Paul