An Estonian joke. Little Johnny, wanting to know more about life, asks his father: ""Daddy, what's between mommy's legs?"" ""Paradise."" his father answers. Little Johnny's curiosity is only growing, so he asks again: ""But then what's between your legs?"" ""The key to paradise."" his father answers. Little Johnny retorts back: ""Then you'd better change the locks, our neighbor has the same key!"" *(Sidenote: In Estonia, Little Johnny's name is Juku.)*