Your Mommy sits you down and is upset to find out you've impregnated your sister. But your surprised to find out , she is upset because she wants you to impregnate her since your father & her have been having issues. She can't believe you and your whore sister has been so selfish but offers you a chance to put things right - by doing what you done to your sister to her. Impregnate your mommy. She knows how much you've always loved mommys big ass, and shows it off for you encouraging you to wank for mommy's tits and pussy. She gives you a blow job, marvelling at how big and grown you are asking if she is better in bed than your sister. You fuck her missionary and she cums quickly, surprised at how good you are in bed, she rides you front and reverse cowgirl, calling you a good boy for fucking and impregnating your mommy, and she encourages you to explode in her pussy as you watch her big ass thrusting up and down your cock. You explode a big creampie into her, and she tells you how proud she is of you.