Up until I was 13 or so, I thought that guy's testicles were each individually packaged (kind of like american cheese) -- ie, they each had their own scrotum. You have to understand, that pretty much everytime I saw them (greek statues, sex ed pamphlets), the penis was in front of them so there was no way to tell. That, and also, why would you call it "balls" if there was really only one hanging item.
A childhood belief about rude bits

others believed things like this
- I originally thought "balls" was slang for buttocks instead of testicles.Anon
- i used to believe all foriegn languages were greek if you learned greek you could speak them all
— pappy 6 27 35 - i used believe and erection was when your testicles went into your penisAnon
- My dad told me that kiwi fruits were kiwi birds testicles. They are the right shape and kind of furry— jefnier
- When I was little I thought that my urine was stored in my scrotum until I needed to wee.— Bryan
- At the time I thought the moon was made of cheese and with oceans of cheese— 123