My hips moved slowly as he gradually fed more and more of his cock to me.Eventually he was all the way in and his pubic hair made contact with my butt...cks. Then, as I loosened up, Rob picked up the pace and caressed my ass cheeks as he drilled me with such a nice hard dick.It didn't take long for me to cum as he sodomized me. Then I felt him tensing up his back and soon he exploded deep inside of my rectum.I really loved the feeling of that warm semen shooting deeply into my anus. He leaned. Dad and Sue headed for the lounge and I was left with, what I assumed, mother who was just a bit angry, and sure enough, as soon as the other two were out of earshot, she started in,"Johnny, I want you to tell me the truth. I want to know what has happened that, suddenly, you and your sister aren't acting like you hate each other? Something's different - now what is it? I just hope that you are both behaving yourselves. Sue seemed to look a bit guilty." Mom looked as if she definitely wanted an. I was also clearly the oldest with no one else even within 5 years of my age. The first couple of days were mostly training. Learning how to address the master and mistress, their staff and guests and learning the rules of the grounds. We were to be naked at all times unless instructed otherwise. Under no circumstances were we allowed to disobey a direct order. We were taught intense hygiene and to be ready to be used at any given moment.So I did just that. I sat ready and willing for. I'm sure it wasn't like that."Christine lifted her head up and looked at Katherine with abject despair. "It was like that! It was EXACTLY like that! God, what's wrong with me?!" Without thinking, she uncurled from her ball and stood up to pace around. But when she saw Katherine stand up too, she held out her arms in hopes of getting a supportive hug.At the last second, she remembered that Katherine was totally nude, but by then it was too late; Katherine had already wrapped her arms around.