She made no noise either as I went to leave; an excellent response. As a reward I returned and removed her gag."Thank you, Sir," she said, her words s...ightly distorted by the stiffness of her jaw. The corners of her mouth were scored red from the gag's straps and her chin was streaked with drool but she did nothing to try alleviate either.In the following day I took the opportunity to explore the limits of Nicola's obedience. She was not required to carry out any particular tasks at first but. I think I was in shock, after all I'd just won nine million pounds and I was tingling all over, but the thought of teasing Sarah kept me quiet. I phoned the lottery at lunchtime to stake my claim and was told that I had to go to them and claim it, in person. When I got back to work I told the boss that something personal had come up and booked the next day off, I then went back to my office and day-dreamed the rest of the afternoon.Sarah didn't speak to me, in fact she didn't come anywhere near. Whatever it was, I cannot wait to feel it again. But now I want you to put yourself inside me. I have waited as long as I can stand it! Please fuck me right now!"Well, only a fool would ignore such a plea, so I moved between her opened legs to get into position. Uh-oh, I had trouble reaching the right place. Helen's fuck-tunnel was too low and far around toward her ass. I tried propping her backside on a pillow, but the pillow was too thin to do enough good. The next thing we tried was propping. The boy lathered his hard prong and then slid it gently into his sister's anus. He held her slim hips, gritted his teeth and slowly inched himself fully up into her as her ring muscles relaxed, and she arched her back, came up on her toes and let her head hang between her elbows as her sphincter yielded fully and he penetrated steadily. It hurt, really hurt and she whimpered.Susie sobbed, feeling violated. It hurt as she was stretched."Ready?" said her brother, smacking her buttocks loudly as.