She knows he loves her in lingerie and also has a very specific fantasy. Maybe tonight she will make it come true. She is so busy admiring herself in the mirror that she doesn't notice when her stepson comes into the room. He stares with his mouth open and she suddenly has a very wicked idea. The idea of being a sexy stepmom seducing her handsome stepson seems like a whole lot of fun. Since he clearly likes what he sees, maybe he should sit down and get comfortable while she shows him more. This is a dream come true and he is happy to say yes to watching Marica get naked. She takes her big tits out of her top and insists on seeing his cock. It is hard and throbbing in his hand. Marica makes him promise not to tell his father what a naughty stepmom she is. He assures her that he won't say a word as he keeps pumping his dick and staring at her big ass and full tits. Marica rolls onto her back and spreads her legs, sliding her fingers up to her wet pussy lips and rubbing in time with his strokes. She loves being the center of attention and can tell he is about to shoot his load. Not wanting to miss out, she rubs faster, sending herself over the edge at the same time he blows a wad all over the floor. She has always wanted to be a sexy stepmom and now she is one.