You walk into Step-mommy's room and she can tell you're upset. She asks what is wrong and you tell her everything. Those bullies at school are teasing you because you haven't fucked yet, and you don't know what a cream pie is. You ask Step-mommy to tell you. So she does.
You're confused at first, maybe because you don't have much experience. Maybe Step-mommy will show you first hand what a cream pie is. You start by complimenting Step-mommy on her hot body and pretty face, you soon get hard as Step-mommy strips out of her clothes, and lets you squeeze and suck her tits. Step-Mommy takes a lick of you cock, and then goes in for the whole thing, sucking you with those big beautiful lips.
Now you're ready to fuck, and to give Step-mommy your first cream pie.