“Daddy?” “Yes baby?” he answered looking up at me, big blue eyes burning into me, making my heart race. “What is is?” “Can I ask you a...question?” I could feel my heart racing and my palms were beginning to sweat. “Of course,” he answered with a sigh, as if I had not learned this about him already. “You can ask me anything you like.” I walked back over to where he was sitting and stopped a few feet in front of him, my fingers twisting with each other. It took me a minute to let the nerves in. There is something so completely taboo, something you don't want to admit to yourself, but all the focus, all our eyes, are just on his dick and her holes. Dragging (barely) my eyes away from their fucking, I looked at Ben at got even more turned on when I saw him looking down at his dick fucking her ass. Knowing how much he loves when I talk dirty, I said "baby, are you looking at her cunt while you fuck?" Continuing to pump his dick in her, he said "Yes yes I wanna see it cum" I told him,. Never complain or ask questions to your big sister. When your big sister asks you to do something, you must do it. Okay?”We all nodded our heads. This class was a lot better than the ones I had when I was with my parents.“Now your big sister will be the one to give you your grades. She will judge you on your enthusiasm and willingness to perform the tasks she assigns to you. If you fail to perform the task, you will receive a punishment. Do you all understand?” he asked.We all nodded our heads.. I started slowly, drawing back as far as she would allow me and then sliding into her, being pulled in by her legs. Gradually, I increased the pace, building towards my climax, trying to last for as long as possible, getting deeper with each thrust. My balls roiled with unspent come, blood surged to my cock; my tongue caressed her mouth, our breath mingled, hot together.“Stop; Stop.” she managed around my tongue.Bewildered, I stopped pumping into her, wondering what the matter was. Without.