12 Months A Sex Slave
You know, since your daddy left for his overseas work assignment, I'm getting sooo horny sweetie. And since you are the only "man" around the house- YOU are going to have to start making sure I am pleased from now on, understand? I have 12 more months before he comes back, and since I'm still married I can't date. But your his heir, so its ok- understand? And I'm JUST your steppmommy and you're only allowed to use your tongue, so its perfectly ok. You are just serving me. Serving a PURPOSE. That's all. And honestly, you really have no choice...I DEMAND that you kneel and please me with that tongue of yours or I will tell your father you have done all kinds of horrible things...you don't want that, do you? Good. So kneel and start licking.
Oh, and I will expect this twice a day from now on. Who knows, maybe this will be good training for you...I will teach you EXACTLY how to do it RIGHT so all the girls at school will be asking you to do it for THEM when word gets out how good you are with your tongue!