Well, I guess boys do start showing an interst in such things before girls. My brother was about 4 when I walked in on him 'reading' dad's porn. And he was around the same age when, while we were watching 'My Stepmother's an Alien' (that scene where Kim Basinger gives Dan Ackroyd a stripshow), he turned to my mom & said "Ma, I wish I was that lady's little boy"....mom:"Why?"....brother: "So I could see her titties".