Thanks a bunch."*****Andy sat on the edge of his bed dejected. He had just sneaked hissister's clothes back in her room. Parting with them made him fe...l sad,like he had just said goodbye to his best friend. Of course, he reallydidn't know what saying goodbye to a friend felt like, because he did nothave any friends. But Andy understood that he felt sad.Andy also felt guilty about borrowing Sarah's clothes. He wouldn't likeit if she did that to him without asking. But he couldn't seem to. "My turn" I said and we changed places. Jackie turned over on her back and i slid into her in the missionary position. As I had done to Mark so did he return the compliment and I felt his hand fondling my balls as I pounded her. The situation was so horny I knew I wasn't going to hold out much longer. I pulled out of her, saying "I'm going to cum if I keep this up". Mark was kneeling beside her face and she was sucking his cock. She pulled it away and said "I want you both to cum on my. I pumped and pumped and pumped my massive load deep inside her. The feeling of my hot cum inside her sent her over the edge and she started cumming hard. "Thank you for filling me with your hot jizz. I've never been with anyone that's made me cum. Usually guys last a minute and then jump off, but you made me cum so fucking hard. That's the best sex I've ever had." She confided. "You should get used to it because we have the rest of the day and night to fuck all we want" I replied. We went out. I came closer to her face and looked right in her eyes " will you obey me ? " I asked as I pushed again ramming her g spot hard making her moan " YES MASTER " she screams and calms down " I'm yours master" she said with a tone of pleasure in her voice I new that she wasn't lying to me and that she really wants to be my slave . I groaned as I started to build up my second orgasm of the day and asked my sister if she ever had a creampie before she shook her head and I knew my answer " well then.