I come home to find my step-daughter flirting with her step-Dad, showing off MY lingerie which she is wearing. I decide to teach her a step-son and make her suck his cock, before showing her how I do it better. Then I encourage her to give up her virginity to him, riding, then watching me ride, then letting him fuck her doggy style whilst she licks me out. He cums all over her arse and I lick it up and feed it back to her.