Once all the girls had taken it in turns to ride his face and fingers they took him upstairs and put on Sally's bed and left him there while they went... out to the shops to get some drinks and snacks. While they were gone their Dad (John) came home from the pub and was surprised to find the house empty and quiet so he headed up stairs and looked into David's room to find no sign of him so he knocked on Sally's door and he heard a noise inside so he opened the door and was shocked to see his Son. My aunt grabbed the bed sheet on the bed tight while she chewed on the pillow to stop herself from shouting.I fastened my pace and started fucking her like a machine for 5 more minutes before I found that she had cummed and orgasmed and the slapping noise of my movement was replaced by squishing sound. I felt her cum soaking my cock and her hips going weak as to not being able to hold the doggie position for long.I lied down on the floor while pulling her over me. I wasn’t done yet and my cock. “Make me.” The taunt hearkened back to their childhood.The next second, her back was against the stone wall, his hand cushioning her head. His glowing eyes bored into her own, as if to melt her with their heat. “I’ll make you stop teasing.” He rocked his hips forwards, using them to pin her. More than the strength of his body, that exposed her to the feeling of his hardness, grinding into her. Even through their clothing, it made her weak in the knees; if he hadn’t held her up with his. Well she was like a child, flat as a board and very little pubic hair. "Isthis what daddy wants?", she grinned, spreading her legs and showing me hertight cunt. "Or maybe you'd rather," she flipped herself half over and usedone hand to pull her bottom cheek open, her taut rose-colored anus displayed.Then she licked her lip and started talking like a little girl, "daddy i beena bad girl will you give me a special spankie?" That always got me a littlecrazed. It sounded just a shade too close to.