My step-mother, number four and seven at different times in my life, was never hot to begin with but she had some looks. She had a paunch, her ass was too big for her small frame, and her tiny breasts were not nearly as firm as they had been the first time she married my father, yet her stygian hair and full lips were something to behold.
My father worked long hours over the weekends, usually out of state, as a convention salesman. When he was out of town my step-mother would have company come over and stay. This usually amounted to a couple of male, female, and sometimes mixed sex company. They would stay holed up in her room, the stench and sounds of sex emanating outward into the rest of the house where the only person left in residence was myself.
After a while I couldn't help it anymore and started masturbating to the sounds and smells. All the moaning and groaning coming down the hall into my room lit the fires of imagination to what was really happening. It was just too much to not get myself off too; spending all week at a job I hated and all weekend not getting laid while she never worked and was having more sex than most people had in their whole lives.
When I'd go to the bathroom I could smell everything and would instantly get hard, which made urinating a long and arduous task as the bathroom was directly outside of her bedroom.
One night, as I made my way to the bathroom as I had many times before, I noticed something was different. The smell was stronger and the sounds were louder as I approached the adjoining rooms. I stepped cautiously in front of her bedroom door and saw that it was ajar just enough to peek in and get my first glimpse.
My step-mother was bent over the side of the bed with her arms tied behind her back, her face buried between the legs of a blonde woman appearing to be in her mid-40s. The woman's hand was on my step-mother's head, holding her face there. Behind my step-mother was a man, appearing to be in his mid-50s, pounding away at her. At about every fifth stroke he'd slap my step-mother's ass.
I quickly but silently moved into the bathroom and closed the door. My hard on was bulging like it never had before and my mind raced. All the times I'd masturbated to thoughts of what was being done to my step-mother had not prepared me for the reality of seeing her be fucked. Especially like that.