When I was small, I thought that old men didn't have penises. I couldn't picture it so I figured that at a certain age they just fell off.
o_O
A childhood belief about rude bits

others believed things like this
- When I was younger I thought men had two penises, one for peeing and one for having sex.Anon
- I used to believe both boys and girls had penises so i thought sex was when they tied them together.Anon
- When I was little, I used to believe I could fly from my bed but I didn"t ....I fell on the floor!Anon
- I used to believe that if I fell asleep lying on my front that my boobs wouldn't grow. And they didn't.— Booey
- I used to believe ghurkins were mouldy penises— bubz
- I used to think that hot dogs were made from boys' penises.— never eating hot dogs again