You're going to your first boy-girl sleepover party tonight, and it's time you started to learn how to be a man. If you don't get some practice, you won't know what you're doing and won't be able to control your body when you're around a pretty girl! And no-one is going to be able to touch your young body like I can. I want your first experiences to be the best ones, to set your standards high. When a girl touches your now-grown cock, she will have to compete with me. I'm not letting you out that door, young man, until I've drained you of all your nerves. Let's take that nice strong cock out and let step-Mommy work her gentle magic on it. I know how much you love step-Mommy's big bouncy titties, so let's settle in to my bosom and use it as a pillow as I stroke you. Moan into my breasts, suck on my nipples, smoosh your face between my boobs and feel them bounce against your cheeks. This is the happiest place you can be, even though it may be terrifying right now. You're too young to know everything about what's going on, but that's what I'm here for. I know what's good for you.