When I was a kid, about 5 years old I used to believe that once upon a time I was a grown up girl becamed a little girl. I always use to say to my older sister,"When I was a big girl...".
A childhood belief about getting older

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 used to believe that the words to Michael Jacksons "Liberian Girl" were "librarian girl".— Paul
- That Madonna sang "I'm a cheerio girl" instead of material girl— HN
- I always thought instead of saying "Im a material girl" Madonna was saying "Im a cheerio girl".— Tiffany
- i used to believe that when teenagers dated, the guy had to be older than the girl.— claire
- I used to think that Cain and Able were brother and sister (with Able being the girl).— Duh