When I was about 7 years old, my friend and I played house. He was the baby and I was the mother, and I ordered him to to take a bath. He stripped naked, and I saw his penis (the first one I had seen). I had learned that boys had a penis and what it looked like, but I never was told about testicles. I saw his testicles and thought they were another penis. From then on I thought boys had two penises!
A childhood belief about rude bits

others believed things like this
- i used believe and erection was when your testicles went into your penisAnon
- I used to think that boys didn't get their penis until they were 18 which was legal adulthood! — beckles
- I used to believe that condoms were weared by girls and boys
both. And they both have penisAnon - I used to think that Frankie Avalon sang, "Hey Penis, Oh, penis..." instead of "Hey Venus."Anon
- I used to believe that gay sex involved a man sticking his penis inside another man's penis.Anon
- I used to believe that gay guys had sex by sticking their penis in the other's penis.— Fanbrat