A moan escaped my lips as I watched Jack and Sara going at it, but neither of them heard as they were rather loud themselves. Sara’s thighs were sla...ping against Jack’s and she was bouncing up and down on him faster. I started rubbing my clitoris, matching my speed with theirs. “I’m cumming Mr. Williams,” I heard Sara announced. “Quiet,” Jack said. “Do you want Christa to hear us?” he asked, even though he knew that I knew what was going on, I had, after all, brought her here for him tonight.. She sat me down on the sofa and went and poured my a mug of piping hot black coffee, almost instantly I sobered up and managed to take in how attractive she really was. Her blonde hair, wavy and perfectly styled ran just beyond her shoulders, sloping down to from what I could see through her top, were perfectly rounded breasts, not too big but the perfect size. Her slim waist accentuated her wide hips showing through her skin tight jeans, flowing all the way down her shapely legs to a pair of. For a while I couldn’t concentrate, images of those nubile young things out at the pool kept on intruding, but eventually I found some interesting information I’d been looking for and started to concentrate again on the more mundane realities of life, like work. The next couple of hours sped by as I engrossed myself in the new information I’d found on the web, so much so that I was quite startled when there was a knock on the door and Natasha called out that some of her friend’s parents had. I need your cock baby." She stuck her ass high into the air.I grabbed a bottle of cooking oil that had fallen on the floor and poured it onto her ass, so that her cheeks were slick and glistening. I squeezed the cheeks of her slippery ass."Stick your finger in your ass. Lube your ass for my cock."She reached back and teased the rim of her ass with her fingernail, then began to slowly slide her finger into her ass. My hands were covered in oil, and I began to lube up my cock while she fingered.