I'm reading my book on the couch when my step-son comes up to me. He's got that look in his eye. I know he wants to have fun again, but his step-father is on his way home from work. We don't have time for that. Well okay, maybe just a little tease. Of course, that won't be enough after seeing that growing bulge in his pants. I can't stand to leave my step-son like that, can I? What kind of step-mother would I be? I pull out that huge cock, sucking on it until he can't take anymore. I make him cum on my face, ruining step-Mommy's hair. He's still hard and wants more. He wants my cum on his cock. I suppose we have a little bit of time for some afternoon delight for step-Mommy. I climb on top of my step-son and ride him right there on the couch. I love the feeling even more knowing that it is my step-son inside of me. He bends me over and takes me hard from behind, eventually filling up step-Mommy's pussy with another huge release of cum. Just then, I hear his step-father pulling up in the car! We have to hurry and clean up, almost getting caught again.