I used to beleive that sex was done between the penis and breasts. only.
A childhood belief about sex

others believed things like this
- i used to beleive when you drank milk your breasts would get bigger so i used to look down at them afterwordsAnon
- I used to think that Frankie Avalon sang, "Hey Penis, Oh, penis..." instead of "Hey Venus."Anon
- I used to believe that gay sex involved a man sticking his penis inside another man's penis.Anon
- I used to believe that gay guys had sex by sticking their penis in the other's penis.— Fanbrat
- I used to believe that babies came from between/underneath the breasts.Anon
- I used to think that the shoulder blades were actually "back breasts".— Kdees