After a long day at work, I was eager to unwind with my stepsister. She had this new sex doll that she was eager to show off, but it was just a prank. She tricked me into thinking it was real, and when I went to touch her, she gasped in surprise. But I knew something was up. As a practical joker myself, I played along. We stripped down, and she teased me, leading me on until I couldn't hold back any longer. I plunged my throbbing cock into her, and she moaned in ecstasy. It was clear she was enjoying the real thing much more than her fake doll. We fucked passionately, our bodies intertwined in a dance of desire. I could feel her wetness as I thrust deeper, driving towards release. With a final thrust, I unleashed my load, filling her up with my hot cum. It was a wild ride, and we both knew it was just the beginning.