Her long finger slid down her wet slit, and she moaned as she thrust her finger into her cunt hole. She pumped her pussy with her finger as she contin...ed to pull her hard, brown nipples. Mark could not believe how big his sister's nipples were. She had huge tits, bigger and firmer than any he had seen in any fuck book before. He pumped his cock harder, his rigid erection growing slick with pre-cum as he pumped himself. He cupped his balls, and fucked his fist harder as he watched his sister use. I asked her is she wanted a drink and she asked for a shooter of Tequila, which I provided for her complete with a lime. Three shooters later we were sitting in my theater, me still in my bathrobe and her still dressed when she said that she would really enjoy my spa. We got up and went to the bedroom closest to the spa, I handed her a bathrobe and she went into the bathroom, coming out a few moments later. We headed for the spa, I opened the cover, she dropped her robe and got in. Yeah, I fell. Silly me," Casey said, warily. "Right. Sorry. I'll be on my way, then..." I said. Something wasn't right. I could feel it. "Goodnight, Mr. Smith," Casey said flatly. I walked down the hallway towards the stairs when I heard another crash. I heard Casey cry out in pain. I ran back to make sure she was alright. I saw her slumped over on the ground. "Ms. Sinclaire? Ms. Sinclaire!" I cried, getting no answer. I lifted her up in a sitting position to see her eyes wide open but. As I was resting in the afternoon heat, Mrs. Gayle, the lady who lived next door walked over. "Hello, Trev," she said pleasantly. "Hello Mrs. Gayle...what can I do for you?", I asked. She was a widow whom I guessed to be in her mid to late 60s, a bit on the plump side, but very well-proportioned and toned. She had classy gray hair which was a bit shorter than shoulder length, breasts which I estimated to be 38 or 40C, and a sort of sexy and full tummy, legs, and backside. I was impressed by her.