My moaning was becoming louder and lazy, and my leg felt like it might give out at any moment. If this is what it feels like to have your brains fucke... out, then I would spend the rest of the night happily brainless. I couldn’t hold it in any longer; I was about to have the biggest orgasm ever, and the first one by another person. With his last few strokes, he sped up as my moans grew more intense, and suddenly, something like a switch turned on in me and I exploded, my juices flowing. I said to Dave “this is the first time for me too, so I suggest we do as we’re told”. I’m lucky that my wife knows how to satisfy me. I’m also fortunate that she is sexually adventurous and tolerates my fantasies and high sex drive. When she’s in the mood my wife will try most things. Risky sex acts like exhibitionist sex in hotel windows, flashing, or getting naked in the car. She knows my ultimate fantasy is for us to have an encounter with another man. Either a voyeur moment on a beach,. Like a man possessed, I pulled her to her feet and began to lick her beautiful nipples. She moaned as I moved my tongue around the nipples, making them stand up. "I wanna eat your pussy, baby." I said as I got to my knees.She giggled as I began to pull down her panties. What I found next left me shocked. A rock hard penis pointed forward between her legs. I looked up at her and she licked her lips. I thought to myself, 'When will I get an oppurtunity like this again?' and before I could react,. He could see her stroke her hot, wet pussy. 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 continued 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.