When I was first told how a man rolled the condom on his penis so as to be able to screw (we used that term when young) his girlfriend and not to make a baby, I couldn't believe it was true. My penis was so tiny and the condoms I had seen were so huge it just couldn't be the truth but when I grew up I found they fit just fine.
A childhood belief about condoms

others believed things like this
- I used to believe that a boy's penis came out of his bellybutton, so you couldn't see it all the time.Anon
- I used to believe that condoms were weared by girls and boys
both. And they both have penisAnon - 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
- a friend of my little sister's had 4 older brothers, so she thought that when you got older you grew a penis!Anon