He tugged at the belt and there was a slither of noise like the rush of a breeze as the belt rushed through the loops of her skirt and lurched into th... air, and she couldn't prevent it because her hands wouldn't move."Turn round!" he ordered, not waiting, but making her do as he asked. He spun her round, kicking her forward. "Face the tree. I'm going to nail you."Her lips were moving, quivering, almost praying, as she twisted her head and saw the nails in his hands, and she was crying, her. Her insides were sending electric jolts of pleasure straight up her spine and into her brain. Marcus was still rock hard and every time she lifted up or lowered down the edge of his cock head brushed over her cervix starting a new cascade of sensation. Matt unzipped his pants and pulled his sizable cock free. He stroked it and suggested, "Maybe you need another cock or two?" She turned and took his cock into her mouth with a hungry grunt and a muffled slurping noise. Matt smiled, "Guess that. I dreamily awoke to him removing my clothing and putting me into bed. I could see that my sister was already in bed as well.He kissed us both and whispered sweet dreams.It seemed like only moments later, dad was in our bedroom, standing between our beds. He had pulled down our covers; our naked bodies were visible in the dim light. My eyes just barely opened and caught sight of his naked body and massive cock. I must have moaned, as he placed his fingers on my lips and said shush, go to sleep.. It follows that you must masturbate to relieve the sexual pressures." I'm not sure that's any of you business," I replied immediately feeling bad. We had always had a very open relationship where we could ask questions of each other about anything. "Sorry, I mean yes I do masturbate." OK," she said smiling. "I think I'll go to bed now. 'Night, Daddy."Cindy kissed my cheek and headed for her room. I looked at her before she turned around and marveled how much she had matured in the last two.