Because my scope of the naked body was limited to my own (female) and my barbies', I used to believe that sex was when a male and female rubbed their bodies together, making sure that the lower private parts were touching. I had no idea what was really involved. :)
A childhood belief about sex

others believed things like this
- I used to think that to desex an animal meant to turn it from a male to a female or female to male.— Phil
- I used to think that when you had sex the male was sucking the life out of the female!— dude
- I used to believe all cats were female and all dogs were male.— Sabby
- I used to think that all cats were female and all dogs were male. — Annalisa
- i used to believe that all cats were female and dogs were male!Anon
- I used to believe that cats were all female and dogs were all male.— Rachel