Your Mum is quite open minded and she wants to educate you on a type of sex that has a bit of stigma around it. She seeks to show you just how pleasurable strap on sex can be and once she sees that you are interested she offers to teach you, first hand, just how great it can feel. She slips her harness on, slipping her big into your ass and fucking you, her big tits jiggling in your face. She is so proud to raise such an open minded step-son.
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