“That was only a half-turn” Mark said. “Now I will continue. Feel free to shout or scream. There’s nothing to be ashamed of.” Mark completed...the turn.“Ooooh god!” I was struggling to overcome the pain, and it took almost two full minutes before I was able to speak. “My whole abdomen is throbbing … my ball … oh … it’s getting worse. I think I’m going to be sick!”I blessed Mark’s foresight that I should start this with an empty stomach; there was nothing to throw up. I felt hot all over. I could. I whispered to her. "Yes I know, fuck don't I know!" She hasn't had sex for a year Mark and she's as horny as hell!"Annie, lost to the world and the booze helping her to lose any inhibitions, now had her eyes closed. Her legs had parted a little and her fingers were inside her loose cotton shorts, her breathing quickening all the time. Oh fuck.By now my cock was rigid, I was so turned on that,, without thinking I slipped my hand down Sue's shorts and started to stroke her hot cunt through her. Her IM said, "Hey David. Let's get together tonight. I know your wife is out of town, and I got some new toys, including that new advanced vibrator you wanted. " "Well, well. What's this? Are you having an affair? Father, I am ashamed," I said with a slight grin on my face. He stammered and looked so embarrassed. I was very much enjoying the whole thing. I was also extremely turned on. "It's okay Daddy, I won't tell," I grinned and sat down on his lap facing and straddling. A kiss becomes a french kiss ... helping someone masturbate becomes watching them masturbate.I wanted to fuck my sister. I mean, ideally I wanted to fuck her while she was awake, while she knew exactly what was happening. But I didn’t know if that day would ever come, and so until then, I’d settle with fucking her while she was under.The trouble was, I had no idea how to get to that stage. Last time, I’d managed to convince her to dry-hump me ... while she was hypothetically asleep. I could.