I used to think that when you lick your elbow. You magically change into the opposite sex. And it's like you were always that sex. Me and my friends tried it for years because we wondered what being a girl was like.
We kept doing it even when we were put in a private Japanese boarding school at age 14. Then, about a month after we came to the school, my friend T.J. claimed that he did it but he didn't turn into a girl. We all had separate dorms and he went to his, got his girlfriend's uniform, some breast forms, a bra, panties, and a wig. Put them on, and came out the next day wearing them and insisted his name was Tyreesha. (T.J.'s real name was Tyler Jeron).
Me and my other friends got jealous, did it too and also dressed like girls. Then we got in trouble and had to wear it for the rest of the semester (18 weeks). And we had to act like girls. e.g. Go to the girls restroom, paint our nails, wear a dress to the dance, wear high heels, and (worst of all) our student information was changed to say we were females.
A childhood belief about magic tricks

others believed things like this
- I used to believe that if I could kiss my elbow that I would turn into a girl (the opposite sex).— Rusty
- I used to think that girls' anuses were green. I remember thinking that as late as high school.— Jack
- I used to think that when you went to junior school you had to wear a turban.— Ellie Stott
- when I was a kid, I used to believe that only girls could be my friends and all other boys were my brothers.
— rajat - That a satchel was a skeleton, and I would have to wear a skeleton on my back for school!Anon
- When I was a little girl, I believed that all cats were girls and all dogs were boys. :)— Mary Ellen