When I was about 7 or 8, my friend showed me some of his dad's Playboy magazines. I didn't know what sex was, but I had a boner. I didn't even know why I had a boner, but it felt good and every time I saw those pictures or even thought about them, I would get hard. Why are there so many of you on here that put your sexuality as "unsure"? You must have some kind of clue what you are if you are over 18. I could understand someone who is in their early or mid teens maybe being confused or unsure, but if you're over 18 you must have some kind of inkling.