You just got caught masturbating while spying on your step-mom during her yoga routine. At first, she was furious but then she decided to take control of the situation and put an end to your inappropriate behaviour once and for all! She moves closer to you and starts to jerk you off, teasing your big dick until your arousal becomes unmanageable. She's finally giving you the handjob that you were always dreaming about. She is even shaking her big ass in front of you! You are ready to explode... BUT, all of a sudden, she stops jerking you and actually decides that you will have to finish yourself off while she counts you down... This is your final chance, if you obey her commands, she will allow you to cover her yoga pants in sticky hot cum. But if you fail, you will never have this chance again!  TL:DR - step-mommy Fantasy, Cum on Clothes with Orgasm Countdown