This wasn't actually my belief; it was, in fact, my little brother. It happened one embarrassing afternoon when, clearly enthralled by his contortionist capabilities, he asked me: "Can you twist your weewee?"
I don't believe I have ever been more mortified, but I managed to explain to him that girls - and consequentially, I - did not come equipped with these. He didn't believe me, and had to go ask our mother to be sure. Boy, what a shocker that must have been for the li'l guy!
A childhood belief about rude bits

others believed things like this
- I actually asked my mother if mixing girls' poop and boys' poop would cause an explosion.— kraine
- I used to believe that all girls one day just became pregnant. Like at some magical age it just happened.— niki
- My sister once asked her mother why she didn't paint her black....Anon
- My uncle told me if you twist your bellybutton, your bum will fall off, I was terrified!— little2ft
- My little brother once asked my mother when we past a couple of factories.. if the factories made clouds— nicky
- when i was very little, i thought that all girls must do ballets, and that i was lucky who wasn`t forced to. — little miss from norway