Ben was sitting in his front room waiting for dinner then suddenly found him face down in a bed feeling a pleasure unlike any he'd ever felt before. Ben tried to move but soon found he was tied down and even weirder he was in the body of a woman. Ben could barely think on that however as he was distracted by the machine shoving a dildo in and out of his new found vagina. Looking up Ben saw a man in the room and hoped he'd help but instead the guy ran out of the room screaming.
Left alone and unable to break free he was at the mercy of the machine relentlessly pounding his pussy. Ben screamed for help but no one came and soon all Ben could do was moan as he orgasmed over and over again. He even passed out several times only to wake up to find the machine still pounding away. Ben was stuck there for hours and could see through the window as afternoon gave way to evening, the night, and the morning. Finally another person walked into the room. It was a woman who looked shocked to see Ben there.
"Oh God! I'm er...your still here!?"
The woman quickly turned off the machine and pulled the dildo from Ben's sore vagina. As she untied Ben she explained she was Amy and that he was in her body, that she was into bdsm and would have her husband tie her up and do this sort of stuff to her, but never for this long. Amy also explained that something called the Great Shift had swapped peoples body all around the world and she ended up as a woman in the next town over.