Strangely enough, except for my sis and cousins, almost every one of my family had never spoken anything to me about sex. I learned by myself a little later but still this is not good. Sex education is healthy :D
I learned about porn when I caught my father browsing an adult site. He then thought that he can persuade me that it is just a computer virus. It didn't work lol.
I learned hentai when I was grade 5 and our teacher introduced newgrounds to the class. The night after, I browsed the site and there it is.
My parents didn't thought about talking to me about the birds and the bees. They already discovered my hidden stash of porn.