We had been out shopping and were enjoying trying on our purchases, the more so as we were close enough in size that we could both enjoy everything. ...I put it on and primped with pleasure. I then removed it and handed it back."Here you go," she said, handing me a bra in a powerful come-hither style. It was sheer too, but with a style and decoration that was clearly meant as more than just a foundation. In peek-a-boo style, it revealed just what needed to be revealed to signal a woman's. It entered her well lubed hole effortlessly. If we were going to be disturbed it would be now because Ivanka quickly changed from the soft and gentle into a woman with a deep hunger for sex. She cried out as she began to ride on me. I held her waist and watched as her breasts bounced up and down wild and free as I thrust from underneath. Her lovely hair reached the small of her back as she arched…her hands with their fingers raking my stomach. She had a way of making the most of every delicious. 'Bad body!' I said to it.In the bathroom I sat on the toilet for several minutes trying to get any of Dad's cum to drip out. Barely anything did. His swimmers were going for the gold, it seemed.I was going to get pregnant! A LOT of Dad's sperm were right now deep inside my healthy teen reproductive system, looking for the egg I knew was either already there or soon would be.Images from a movie in health class went through my head. I envisioned some of Dad's sperm finding my egg, not caring that. Much to their dismay Dad let the cat out of the bag that it was a total tan. There was a bathing suits optional beach in a private cove. Mom and Lisa did tell us how much fun they had and how much shopping one could do in just a few miles.Jason and my Dad raved about the charter fishing trips out into the Gulf and the surf fishing. I knew they would be willing to make as many trips there as was needed. Jason was talking more about retirement and dropping hints he may be interested in helping us.