Once I came across my mother's diaphragm in her room, but I had no idea what it was. I figured it was a really big condom. Let's just say I was a little freaked out by my dad when he came home that night. I figured his penis must be really big, and I couldn't fathom how that was humanly possible. I know better now.
A childhood belief about condoms

others believed things like this
- For some reason, I used to think that a 'condom' was a kind of hairstyle. No idea why.— SW
- When I was little,I used to think the TV stopped when I went to bed. I figured it all faded to white.— Sharon
- I used to think I smelled wrong, but I figured out it was because we never used dryer sheets. — blnkfrnk
- I was sure I had it figured out: exploding turds caused farts.— al
- i thought the name Anon, was really a name...pronounced A-Non...haha i figured it out— Norman einstien
- I used to wonder what kind of insect "uncles" were named after.
I had "Ants" figured out.— Kimberly in AZ