You know that pumping without permission is not permitted here, but you just can't help yourself. Good thing Step-Mommy knows just what to do about that. First, she'll remind you just how much better it feels when you get permission to pump and cum for her with her instruction. Second, you'll feel the sensation of cold metal wrap around your drained dick and lock it into place. And you'll remain there with only the memory of what you lost the privilege of doing for trying to masturbate behind your Step-Mommy's back. Enjoy it while you can. This is the last orgasm you are going to have for the foreseeable future.