You suggest to your stepmommy that you both play a game, where she completes a number of tasks and if she loses, then she loses the bet! Prize can be anything the step-son wants. If stepmommy wins, prize can be anything stepmommy wants! You make her do ridiculously pervy tasks and she suspects and loses her temper. After cooling down, she shows off that she can complete the bounus task and was actually turned on by the whole situation. StepMommy won, so stepMommy wants YOU! *pov sex without dildo and implied cumming