Prequel to 'Sister's Turn to be Bred' (also sold as one whole movie). Your mommy greets you, 8 months pregnant, and tells you it's time to breed your sister too. How sexy will it be knocking up both your mom and your sister together? I strip naked and have you fuck my body, lots of taboo talk involving mommy and sister. I tell you not to cum, and to save your big load for your sister.