As he gave her the first shallow thrust, it jarred the pressure inside her. Watching as he began to fuck her, her heels pressed into his calves. Measu...ing time, she directed him to graze that perfect place over and over again.“Yes, yes, like that. Good boy, good boy.”Her student was a fast learner; his precision to his task was relentless. The fluidity of his movements took her and her response was instinctive. With a pouting soft groan, she flicked his nipples with fevered thumbs. His own. I was sure he would take the opportunity to slyly feel up her ass while he did it, and maybe rub his cock against her when he got to the top part.He didn't get the chance to do this however, as Sally gave a tiny little shake of her shoulders, making the dress fall in one motion down to the floor. "Ooh!" she exclaimed. “I’m sorry. I didn't mean that to happen."The guy just stared straight at her tits, then her pussy. His cock was now straining to get out of the confines of his jeans. She trained. “Daddy oh that feels so good. Make me cum more Daddy.” “You know baby, I used to fuck your mother in the same position we are in now. Good for quickies and deep penetration,” he says confidently. “Daddy, deep penetration indeed, I feel all of it. Every inch, But more Daddy, more," I say still wet and horny. “You see that there on my cock sweetie that is girl cum,” he says looking down, not pulling out completely but slightly enough to see the buildup of my cum on his cock. “Really?” I ask. "Now Kimberly I want you to lie flat back on your back," I directed.She seemed startled for a minute as if events were going too fast for her but then set down her work. She leaned back and stretched her legs out. Then she lay flat. She blinked up at me.I straddled her and lowered myself so I sat on her abdomen. Then I shifted forward so my cock rested between her breasts. "Now Brittany I want you to hold your sister's tits tightly together so I can fuck them," I told her.Brittany lowered.