Until I was in college, I never understood exactly where a woman's urine came out. I thought the vagina was only for having sex. My working theory was that female pee came out of the same opening as her poo, but I always wondered where they came out together, or seperate times, or if it just varied.
Sadly, it took close examination of a college biology text for me to see the light. That's the sort of thing that happens when you only have brothers.
A childhood belief about rude bits

others believed things like this
- I thought that wars had to last four years... just like high school and college.— A. Falk
- I use to belive that in college, you would have sex on a bed and be noted :D im serious.Anon
- i used to believe that everyone got married the day they graduated from collegeAnon
- I used to think all wars lasted only 4 years, like college or something. Anon
- I used to believe that you got married right after you finished high school or college. Anon
- The very first time I saw a globe (of Earth, yes) I asked where "College" was located.— Shade