She took out her phone and took a picture of me in bed. I just glared at her.“What? You should’ve seen it coming.”“Uh…you sure you wanna cha...ge those words?”“What are you…” she said before realizing the double entendre. “Oh! You are one disgusting pervert!!!”“Said the person who left a nude pic of herself in my room.”“Touché.” She kissed my cheek, to which I blush immediately after. “I have a surprise for you later. Come to my room when our parents are asleep.” She whispered into my ear before. As far as my sister was concerned, I’d abruptly stopped masturbating. No longer could she spy on me from outside the bathroom door, secretly getting herself off as she did.I was hoping to leverage the fact into stopping her orgasms as well, leaving her horny, desperate to make me cum so that she could as well. No such luck.We sat there in silence for a few seconds, as I hastily constructed a backup plan.“Okay,” I said eventually. I had a new path to go down; hopefully this one wouldn’t be. Underneath a cheap suit was what looked like a very muscular body. Cindy looked around for another way out. She felt very self-conscious before this stranger. She grabbed a notebook off the desk and held it over her chest.The man laughed and grabbed the notebook out of her hands, tossing it aside. "Why so shy Cindy?" he asked. "It's not like your hiding anything I haven't seen before. Besides, you know what I want." Cindy gulped and stood up straight. "No," she said, she had no idea what he was. “And that,” she added, nodding to where Zee was gagging on my cock, “then I hope you’ll be up for another round with me.”“Of course,” I said, reaching across to give her nipple a tweak, “I’ll give you a pounding that you won’t forget.” I knew what turned her on too.Esta and I were close friends as well as frequent sex partners. In contrast, Zee and I hardly spoke, despite both frequently visiting Stimulation. Although that may have been because she spent an extraordinary amount of time with her.