So one night her girlfriend was over and they were drinking margaritas and feeling fine. So I walked in and told my wife that this was the night for h...er fantasy to come true. She looked at me and almost creamed her pant and started squirming on the couch. I told her I found a place were there are several Eager BBC waiting for her. I looked at her friend Jennifer and told her she could come along if she want to watch. Jennifer feeling frisky from all the margaritas agree to come and watch. So I. My life was moving along just fine until recently I returned home from a very hot day at the Studio; my clothes felt tacky on me and I was aching for a shower.In the kitchen I immediately slip off my heels and discard my pencil skirt, then drinking a glass of chilled water, I shed my blouse.Then going to my room I pause suddenly at the open door; sensing someone’s presence!Cautiously, I peer in.I’m shocked, for there lying on my bed, in only his vest is ... my son Ben!I had no idea he would be. "What?" we both wondered."For no reason whatsoever," Sarah replied, raising her hand. "He gave me this ring." "Holy shit, step sis, congrats," I cheered, getting up and strolling to her.We hugged each other for a moment as our significant others just watched.We let go after just a moment, and I got a close look at the ring. "Wow, Chris, you must love my step sister, you better take good care of her." I will," Chris answered, getting up with us. "You've been taking good care of my step sister. “Mmmm,” she said as she settled in. “Perfect. You?”I nodded, put my drink down on the side of the tub, and tried to figure out how to drop my pants and join her without my cock flopping around like a horny teenager.I turned away, slipped off my jeans, and - as gracefully as possible given the circumstances - angled sideways into the tub, trying desperately to hide my erection.“Nice ass for a guy your age,” she joked as I sat facing her from the other side of the tub. I reddened with.