I used to think that being circumsised ment that you had a tail on your penis. When I saw a scar on my penis, one day, I freaked out and ran around yelling "I am not a dog! I am not a dog!"
A childhood belief about rude bits

others believed things like this
- 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
- I used to think that men's poo came out of their penis' like wee.— Helen
- I used to think that I was the only person to have a penis!Anon
- i believed that penis's were hotdogs— Justin (Visualizer)