i used to believe that when people had sex, they didn't get completely naked. since anatomically, they only had to take off their bottoms, they never took off their shirts. I think I got this from a book: it was talking about someone who didn't really know how babies were made, all she knew was it involved getting naked "from the waist down"
A childhood belief about sex

others believed things like this
- For the longest time I used to believe that the male ballet dancers were naked from the waist down.Anon
- I used to believe jaywalking meant walking around naked in public (from naked as a JAY bird...)— Izzi
- I used to believe that oral sex was getting naked and talking dirty/about sex under the covers— Bella
- I used to think babies where born naked because their mothers were too lazy to eat clothes for them to wearAnon
- I use to believe that a stripmall was a place where people could shop nakedAnon
- i told my mother that sex was when two people get naked and tell ghost stories.— linds