I didn't know the difference between a penis and testicles, but I'd heard of "balls," so I thought penises looked basically like a bunch of meatballs stuck together in a row. When I was eight, this came up in conversation with a male friend - I drew a picture for him and he laughed hysterically and then drew me an accurate picture.
A childhood belief about rude bits

others believed things like this
- I originally thought "balls" was slang for buttocks instead of testicles.Anon
- I used to believe that the mole on my leg was from when my brother drew on it with a marker.— Lori
- I used to belive that sometimes my grandfather drew the clouds for me. Anon
- I used to believe that God looked exactly like the picture of Abraham Lincoln on an American penny.— Leah
- I used to think people with lots of freckles were playing with crayons and drew dots on their face.— WOW
- We had a male cat that wasn't neutered. I thought his testicles were just the cat version of a butt.— Robyn