You do exactly as I say, always, especially when it comes to your cock. My cock, really. I own your cock, and your cum. So if I say stroke, you stroke. If I say stop, you stop. If I say, "hold your cock tight and present your balls to be spanked," then, well, you do as you're told. Because you are step-Mommy's Good Boy, and step-Mommy's Good Boy always does as he's told. Because only Good Boys get to cum.