I walk into my sister's room and she's so into what she's doing she doesn't even notice. I ask her what she's doing even though I can already tell she's watching porn fingering her pussy. She acts all startled and tries to hide what she's doing. I take her computer and she's watching brother/sister porn!!!!!! I knew my sister wanted to fuck me! I already knew she was a huge slut but now she's going to be my slut. She tries to lie and say it's just a fantasy and she would never actually want to fuck me(her brother). She doesn't look too convinced though and I get her to take off her robe and start sucking my cock. Yep, she's totally into it!!!! What a slut! But a blowjob's not enough, she wants to fuck her big brother!! She bends over face down, ass up and invites me to fuck her tight wet little pussy. It feels so damn good. I never knew how much I'd love fucking my little sister! I cum all over her ass glad I could make her fantasy a reality!