I may only be your step-mom but I still love you and want you to be happy and that is why I have to be completely honest with you. See I know about your tiny cock and I hate to tell you, but no woman is going to want that little thing. But don't be sad, that is why I am here, you can jerk that tiny dick off to me. I want you to be happy and I would rather have you jerk off to me than go out and get rejected by other women.
Trust me, I know what's best for you and from this moment on you will be going pussy free for me.