I took sex ed in 6th grade in a fairly conservative town. We covered how the sperm fertilized the egg, but not exactly how it got there. I thought that men ejaculated tiny sperm into the air--they'd float around until they found a nice woman to swim into, and then there'd be a baby.
A childhood belief about reproduction

others believed things like this
- I used to believe that a baby's sex was determined by whether the sperm had a picture of a man or woman on it.— David E.
- I thought sperm were fish and when I got a goldfish I went around telling everyone i had a sperm— Kara
- I use to believe that the man peed in the woman to get her pregnant. Didn't know about sperm until sex ed. — das
- a friend of mine thought that you could get pregnant by swallowing sperm. Ha!Anon
- I used to think sperm was invisible.Anon
- I used to believe that when a woman was pregnant, she fed the baby with a tiny spoon through her belly button.— Marie