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Your pregnant step-mother wants to talk about the inappropriate relationship between you and your step-sister. If your going to be doing anything like that it should be her anyways, you laugh as she makes assumptions and offers herself to you instead, blowing her off initially and calling her a prude. She would never be able to satisfy you with your fetishes. She tells you that your wrong and that she can be quite a little whore, your amused and decide to play along telling her how you like to stretch your step-sister with large dildos and watch her fist herself, your intrigued to watch your step-mother attempt this. But to your surprise and absolute pleasure, not only can she take all the dildos you give to her, but she also has a filthy mouth and squirts every time she orgasms.