I used to believe that your balls and scrotum were a 'hat' for your penis - so-called a 'Penis-hat.'
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
- We use to think the male organ (penis) was called a PUDDLE....
My twin sister and I both called it that...Anon - I used to believe that gay guys had sex by sticking their penis in the other's penis.— Fanbrat
- Up until I was about 14, I always thought that the penis was called a "pickle."— Amanda
- I used to believe that a penis was called a bobby because my mum told me... I believed this until I was 15.— Patricia