i used to believe your penis would grow if you masturbated
A childhood belief about sex

others believed things like this
- im a girl and i used to think my mom had a penis and i would eventually grow my ownAnon
- I masturbated for the first time with a stuffed dog. I believed I was going to have puppies. — Not pregnant with puppies
- The first time I masturbated, I thought I was going to get pregnant by my own hand.
Anon - 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