You peek into step-moms room to see her fingering her pussy to porn. You stand there and watch for a bit, but then she turns and catches you staring. Instead of being mad or embarrassed, she invites you to join her. You sit in the bed and she makes her way to your cock, stroking it and licking it. She gets nasty about it. She talks about how you used to nurse on her breasts and how you're fucking the pussy you came out of. You're so turned on by this, you creampie her, allowing your seed to fill her up and drip out.