Step-Mommy's Boy

You return home from school and Step-Mommy asks how your day has been. She suggests that the two of you could spend some quality time together this evening seeing as you've been such a good boy at school. You tell her you're sorry but you're having a sleepover at your friends house tonight... Step-Mommy hasn't heard you speak about this "friend" before.
As you're leaving with your bags all packed Step-Mommy wants to check to make sure you haven't forgotten anything... only to find a stash of her condoms in the pocket of your bag!!
Step-Mommy tells you that she is disappointed that you would sneak around behind her back and lie to her, and tells you you're not going.
You go upstairs to your room, sad because you was really looking forward to finally losing your virginity to this girl you've been dating.
Step-Mommy comforts you, and tells you that she has the perfect plan to cheer you up and feel more comfortable telling her things... after all if the two of you have the biggest secret of them all, he won't need to keep any more secrets from his Step-Mommy.
You are reluctant and say that this is taboo... where did you learn such a naughty word like that? Step-Mommy tells you that naughty words like that makes her pussy extremally wet. So you're going to lick it...oh yes you are!! JUST DO IT.
Even more reluctant when Step-Mommy demands she rides you, she tells you that cock and it belongs to her. The only pussy you're allowed to fuck from now on is hers...because you're "step-mommy's boy".