Your stepsister River is smoking something that she shouldn’t be and you threaten to rat her out to your parents. If you keep her secret, she will do anything you want. You have a few ideas in mind. River shows you her titties and this pleases you. You always thought that your stepsister was a slut, and now you are certain of it because she tells you to take out your cock. Done and done! You do not hesitate in taking out your cock and you start stroking to your slutty stepsister. You love having the upper hand and you are taking full advantage today.