when i was very young and i had no idea what a penis looked like exactly i thought that it was very long and resembled the snuf-o-la-po-gaus (okay i KNOW that's not spelled right but sound it out and you'll know who/what I'm talking about--think sesame street characters) nose. I thought that they just rolled their penis right on up and kept it in their underwear.
A childhood belief about rude bits

others believed things like this
- I thought penis was spelled “Penus”, Like “Venus” but with a P.Anon
- 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 believe that a penis was the same as a vagina except really long— *stupid*
- i used to believe that if you have sex for too long, the penis would stay in your vagina— Angela