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You have a dirty habit of stealing your step-mother's underwear. Anytime she leaves a dirty pair laying around, you steal them. You know it's wrong but you just love the way they smell. It started off as just smelling, then you couldn't stop yourself from wanking, then eventually you started using them to wank with. You just can't stop yourself. step-Mommy finds her knickers under your pillow, at first she doesn't suspect anything dirty, but then she sees your dried cum on them and figures out what you've been doing. She confronts you. You're confused because she only seems to be upset that you stole from her. step-Mommy likes that you love the way she smells and tastes. It makes her feel hot and desirable again. But as you stole from her, she decides it's only fair you show her what you've been doing. She makes you jerk your dick for her while she talks you through it. You've never had such a good punishment before.