So I was talking with our step mom- and we've been knowing about how you fantasize about me, your big sister. We've seen you get hard looking at my big tits and go to your room to jack off, it's pretty obvious. But now that I've decided to move in with you- I've noticed things have only gotten worse. You are obsessed with looking at my body. So I want to help you out and give you something to stroke your dick to... I'm going to finally let you see me completely topless... shhhh I also have another surprise for you