You caught step-Mommy bringing in her bags after a shopping trip to the outlet mall. You know step-dad will be so mad at the amount of money that she spent so you decide to......blackmail her into submission and fuck her. step-Mommy can not believe that you are blackmailing her. You tell her that you want her to be submissive to you. You tell her that you want her to wear a collar and cuffs in addition that a fuck machine will warm your pussy since it is no longer hers up for your cock. step-Mommy very reluctantly agrees to your conditions on not telling step-dad about her shopping spree. She puts on the collar and cuffs and strips for you and agrees to call you step-Son. The fuck machine warms your pussy up with step-Mommy's hands above her head. until you decide it is time to fuck. You warn her the she is not aloud to cum without your permission which you do not give her of course, step-Mommy has to wear a ball gag while you fuck because she was being too loud when the fuck machine was fucking her. You fuck her on her back and then have her ride you with her hands behind your back until you both cum. You and step-Mommy are going to have a lot more fun with her submission. POV missionary and riding