Josie is grateful for your help with her history homework tonight. You would take any chance to help your step daughter, but she is hoping you can help in another way. You are friends with her history teacher and she wonders if you could possibly influence him to be a little more lenient on her in class. She would be happy to let you jerk off to her sexy body if you want to. Since you do not plan to touch one another, you feel that this is okay. You take out your cock and start sliding your hand up and down around your hard shaft. Every time she calls you "step-daddy" you grab your cock a little more. Her sweet voice teasing you is almost more than you can handle. Josie has a perky butt and she happily shows it off to you during your stroke session. When she tells you that she wants you to cum on her pretty ass, you stroke yourself faster and faster until you cover your step daughter with a big load.