when i was little, i thought that boys didn't have eyelashes, only girls did. it freaked me out when i realized my older brother had them, too.
A childhood belief about eyes

others believed things like this
- I thought that the difference between girls and boys was that girls have teeth.
Anon - that cats were only girls and dogs were only boys. I definetly didn't get the whole reproducing thing yet.— Jamie
- I always thought when I was a kid that Milo is for boys and that milk are for girls. . . — Cathyia
- i thought cats were girls and dogs were boys. Anon
- I always thought cats were all girls & dogs were all boys ... I have no idea why.Anon
- I used to believe that little boys grew up to be girls and little girls grew up to be boys. — Darin