When I was younger I believed that testicles were actually babies waiting to be put in a womb.
So if I saw a woman with 3 or more children, I figured she was cheating on her husband.
A childhood belief about rude bits

others believed things like this
- I used to think that my testicles were eggs that would become babies when I was older...— Martin
- I used to confuse tentacles and testicles when I was younger. It was funny— Chelsea
- I thought that a woman got pregnant kind of like catching a cold, by being around her husband for a long time.— No Name
- I used to believe that to make babies, a man would pee into a woman's butt. There. I said it.— Hu Flung Pu
- i though that the man and woman couldn't really have babies until marriage,lmao,what a stupid person i was— what a stupid
- my husband believed, until recently, that the word "several" meant seven of something. — sheryl