I used to believe that if I wasn't good I'd turn into a boy, because everywhere people were always saying: "Those boys sure are awful. I wish they could be girls." Or "Dennis, if you acted more like your sister you wouldn't be in this mess." and etc.
A childhood belief about getting older

others believed things like this
- I thought Hurricane Dennis (in 2005) and the character Dennis from the Spongebob movie were related somehow.Anon
- I thought that the difference between girls and boys was that girls have teeth.
Anon - When I was little my sister told me that if I put a C.D. in the wrong case, it would mess up the C.D.'s songs.— Torrie
- I used to believe that little boys grew up to be girls and little girls grew up to be boys. — Darin
- when I was a kid, I used to believe that only girls could be my friends and all other boys were my brothers.
— rajat - I used to believe that tigers were girls and lions were boys— Ruth