When I was about 9, I was looking for some batteries in my dad's drawers and found one of his DVDs, lol. I only looked at the case, though. I remember they were all blonde women, with big breasts, dressed in leather outfits and holding what I thought were 'sceptors'
Later on at 11, my dad had overwritten some Naruto episodes I had recorded from the TV with really outrageous porn! I just screamed, lol.
I saw my whole first porn video at 13, when I misspelled YouTube, haha. The site had it on autoplay, I just stared and then I was hooked.