I used to believe you had to stretch condoms over you testicles.
A childhood belief about condoms

others believed things like this
- I used to believe that you could stretch a rat's body to be super long.Anon
- I used to think pee was in your testicles.— R.G.
- I used to believe that my testicles were actually grapesAnon
- I used to think that your cuticlas were called testiclesAnon
- i used believe and erection was when your testicles went into your penisAnon
- When I was young I used to think my testicles held the pee!Anon