I used to think that "testicles" was the word for intestines. so I was watching The Simpsons one day with my mother when Bart was on steroids and he said his testicles didn't fit in his underwear and I asked how he got his testicles in his underwear.
A childhood belief about rude bits

others believed things like this
- I used to think that 'testicles' was the word for the arms of a squid or an octopus. — Emily
- 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 to believe you had to stretch condoms over you testicles.Anon
- i used believe and erection was when your testicles went into your penisAnon