Stepdad's Safe Sex Lesson

You are worried that your stepdaughter is not practicing safe sex so you decide to talk to her about it, birds and bees yada yada, and she does not want to hear this from her stepdad. You try your best to give her advice and she turns the tables on you. She wants you to show her what really safe sex is. Show her?? Can't back away now so one thing leads to another and soon your stepdaughter is masturbating in front of you and your cock is getting hard in your pants. What else could you show her...