Look, I've been teaching you and your sister about sex for a while now. But its time she learned what foreplay and full fucking is like. So, you're going to help me. You know just what to do: sit back and let Mommy use your body. See, a man is at his most useful when he's serving a woman. of course, there is some give and take--you want him to be hard, of course, so you suck and fuck him, but always he should be ready and willing to be a seat for your pussy, to make you wet and make you cum. It's about getting pleasure, sweetie, and your brother and I are going to teach you all about it!