"Oh God! You know just what to do, Ronnie!" Maryanne cried as Mark moved down to the foot of the bed so he could see my c**k gliding in and out of his wife's steamy cunt. He was grinning from ear to ear and jacking himself off as he watched. This was too f*****g bizarre! I hammered my sister's p***y, anxious for my own release. "Come here, Mark," Maryanne panted. "I want to suck you off while Ronnie f***s me." She didn't have to send him an engraved invitation. Mark jumped off the bed and stood right next to Maryanne's face. We turned slightly so that she was facing his c**k while I pummeled her p***y. "Can you see?" she asked her husband as she grabbed his c**k and swirled her tongue over the swollen head. "Yeah! I can see really well," Mark blurted as Maryanne sucked him into her mout

