ROLEPLAY: (not a real doll) He is watching his sister's house while she is away for the weekend with her boyfriend. She tells him to stay out of her room. He goes to investigate against what she told him to find a sex doll that is identical to his sister in a sluttie nightie. He then puts her on all fours and puts his dick in her mouth. He then pulls out her tits and pulls the nightie up to expose the dolls ass. He fucks the doll from behind and her boobs sway and her ass ripples. He moves her to reseversed cowgirl position and continues to have fun with her. Her boobs are bouncing up and down. Then he does cowgirl. He can't take it anymore and pushes her forward and cums on her ass. "My sister is such a slut!"