She could taste his pre-cum in her mouth and she started sucking harder. He moaned, starting to thrust into her mouth. She could feel him throbbing in...her mouth and knew he was about to cum. Suddenly, he moaned into her clit, sending vibrations deep into her. She moaned in response, her back arching, only her shoulders and her ass touching the table. He plunged his tongue deep into her, driving it in as far as he could, pressing his face against her, his warm breath blowing across her swollen. I couldn’t help but notice the way Darcy’s eyes explored the folds of my robe.“Take it off, “ was all my sister said, and I did as I was told. I stood there naked in front of my beautiful identical dominant twin sister.“So. How did you sleep last night?” Darcy asked with a smile.For some reason, I felt slightly embarrassed. It had been funny last night when my sister had called me her bitch. And I let her watch me masturbate. “It was fine, I guess,” I said looking at the floor.“Oh come on.. With no real solution and Mike’s temper fuming, I decided not to offer any suggestions to our traveling order, even after we ended up stuck and tilted sideways, with murky water filling the foot well on the driver’s side. Late afternoon we ended up on a rugged fire service road that was easily passable with four-wheel drive and made our way back to the paved road to find a campsite for the night.Our planned destination was a small primitive camping area with only a few sites and a pond within. That is where we slipped up. I remember that day quite clearly.I had just turned 17 and school was out all summer. I got up early, had breakfast, kissed my Aunt goodbye and walked to the market for a few things she wanted. After a half-hour, I was back. I entered an empty house. I opened my mouth to announce my presence when I caught the sound of music coming from the backyard. I made my way though the dining room into the kitchen and looked out the back kitchen window. There she was, stretched.