.". Her breathing became ragged and choppy as I continued to pump in and out of her, balls deep then out again, rubbing the bud between her legs as sh...e slammed back against me. She began to tremble and stopped rocking, pushing back against me and pulling me deeper inside. A low, slow breath escaped her as she let out a deep sigh, body quaking and pussy convulsing, pulsing around my cock. She let out a whimper which turned into a low groan as she continued shaking, pushing back on to me. The. We think she produces a pheromone that makes her almostirresistible to anyone who comes too close. And the effect isnt just onmen, either. We tried having females look after her, but they fell underher spell almost as quickly as the men did. Finally, we had to installthe shock plate to protect her." Interesting," you say."And that's not all. She has some kind of healing factor we cannot evenbegin to explain. She tried to commit suicide with a sharp edge of amirror, and the cut healed before. As I entered I understood why, he was only in his underwear and t-shirt. Once inside he quickly closed the door and asked if I would like something to drink which was nice but I declined. He invited me to sit down on the couch in the living room and he quickly stripped out of his clothes exposing a very nice looking 6" penis with moderate greying pubic hair. He moved to stand directly in front of me as I sat on the couch, I got the feeling he was inviting me to begin. I told him that I was. I would go into her bedroom at night wearing my pyjamas and sit on her bed talking to her. I would purposely ensure that my pyjama trouser opening was indeed open and that my cock could be seen, she could not fail to see it through the opening of my pyjama trousers. That would be the extent of my sexual activities with my sister, I found these events immensely erotic and I would masterbate fantasising about them later. What she thought about my displays I don’t know but she never complained or.