Last night, I had the most bizarre yet arousing dream. My step sister, who's just 18 and as skinny as a toothpick, was riding me with wild abandon. It was a sight to behold, her petite frame bouncing up and down on my throbbing member, her eyes closed in ecstasy. The strange part was, she didn't even know she was doing it. It was all a part of my twisted fantasy. But who am I to deny the pleasure? I let her ride me all night, her tiny body moving rhythmically on top of me, her soft moans echoing in the room. As the moonlight filtered in, I realized it was all just a dream. But the memory of her tight embrace and the feel of her body on mine was enough to make me rock hard. It was a wild ride, but I wouldn't have it any other way.