I walk in on my step-son jerking off on my chair. How convenient. His step-father is out of town and this is the perfect time for me to teach my step-son a thing or two. First I let him belive this is going to be a regular fuck and I suck his cock. Then I let him fuck me from behind for a while before I announce that I have a surprise for him. I walk into the room where he is waiting for me and I pull out my strap on. He is going to enjoy getting fucked in the ass. Step-Mother knows what is best for him. After I take his ass virginity it is time for him to cum. I know it's been months since he actually came and his cock is throbbing. He doesn't know it yet, but I am going to ruin that orgasm for him and he won't get to cum again for another 30 days. Maybe he should taste his cum to see what it is like. Step-Mother knows what is best for her step-son.