Your father is so stuck up and mean sometimes, and prudish. He shouldn't make you ashamed of a perfectly healthy and natural thing to do. I might be your step mom but I treat you like your my own. I told all of my own offspring that it is OK to masturbate and I am telling you the same thing. Do not listen to him it is perfectly healthy and fine to masturbate. Just don't let him catch you though then we will both get in trouble.No need to blush and get all embarrassed. It's OK and I want you to be able to talk openly to me about any questions you might have. Oh goodness just takling about it is making your penis erect isn't it? Well then I will give you some privacy so that you can take care of um.. buisness before your father gets back home. What? You want me to stay? Well ok if it will help you to feel better about masturbating and less ashamed then I will stay and watch you. Oh my look at how hard you are sweetie. My my very nice. Now go ahead and masturbate in front of mommy before your father gets back. There you go Good boy