Her hands caressed his thighs, fingertips dragging lightly over his smooth, muscled legs around to his firm ass. She dug her fingers into his ass and ...ulled him closer to her."Don't forget me, Tommy." she said once again in that eternally ball-draining, hushed, husky English accent.And with those words she leaned her head forward, mouth open as she started with his balls, kissing from his left to right nut, then up his sac to the base of his shaft, paying loving, respectful kisses all the way. The shower has a glass door, and I was at just the right angle to watch her, without myself being seen. As the water fell over her body I could make out the soft curves that defined her as a wonderfully attractive woman. She had perky C cup tits that barely showed the effects of time and child bearing. Her hips were full and nicely padded. Roz was in no way heavy, but she had filled out nicely since the last time I had seen her naked, all those years ago in our youth. I couldn’t help but watch. “It’s ok. I’m flattered, actually. Do you like what you see?”“I-I-I don’t know what you’re t-talking about,” I continued to stammer, blushing even more scarlet.“Do you want to touch it? Do you lie awake at night wondering what it would feel like? What it would taste like?”It was like he was reading my mind. Delving into all my deepest, darkest fantasies that I had kept secret in the dark and in my mind, and pulling them out into the light.“Don’t be embarrassed,” he said with a smile, “I’ve. I told her not to worry and that i know how to delete it.She said I bet you do now staring at my light brown penis...she went on to say something that shocked me...."do you need any help?" I can still remember the look on her face my mind was in utter disbelief and my mind was rushing with thoughts about whether it was a trap or whether it was right...But the thought of my beautiful sister helping me cum took over my horny little messed up mind..I told her if she wanted she could do whatever.