As I'm walking by my step-son's room, I hear an odd noise coming from his open door. I walk into his room and find him masturbating with the door wide open! He's not even doing it right. Well, I can't just leave him like this. I get on my knees in front of my step-son and show him how he is supposed to be treating his cock. I gently stroke it up and down to show him how to masturbate properly. Eventually, I can't help but put his beautiful cock in my mouth. My step-son's cock tastes so good! I'm definitely getting carried away, but I just can't help myself. He needs to learn properly, and it's a step-mother's job to teach him. I am getting excited and pull my titties out of my top while I continue sucking on his cock. I can see how excited he is getting. As a good step-mother taking care of her step-son, I pull his cock out of my mouth so he can cum on my face and titties. That should be enough for him, and I suck on his cum covered cock for a bit longer, and his cock is still hard. Wasn't that enough? He wants more? No, I can't do that with my step-son! Thought it would feel so good. And if we've come this far... we might as well go a little further. I climb on top of my step-son with my ass facing him. I let him take a good look at his step-Mommy's ass while I take off my leggings. I rub my step-son's cock up and down on my pussy, letting him feel and hear how wet my pussy is. I slide my step-son's cock inside of me, and it feels so good! As I rock up and down on his cock, my pussy keeps getting wetter, dripping down his cock. I feel so naughty giving my step-son a perfect view of my asshole, and the thought is going to cum all over his cock! After I cum on his cock, I need to make my step-son cum again. As he is getting close, I pull his cock out so he can cum all over his step-Mommy's ass. I rub his cum covered cock on my soaking pussy, mixing our wetness together. Though we probably shouldn't do this again, I'd be lying if I said I didn't enjoy myself. Maybe we should keep this up, but we have to keep it a secret. I know how much he liked his step-mother's wet pussy.