Impregnate your mommy

Sweetie, mommy needs to tell something serious. No of course you're not in trouble. Honey, you know mommy has been a single step-mother since, well since forever for you. And I told you that your step-father ran off right? Well that's actually not true. You actually have met your step-father. You were with him last week in fact! Well, years ago, I had sex with my step-brother and we made you. My step-brother impregnated me and it was the most amazing orgasm I have ever felt. Mommy has been chasing that feeling every since. And when I knew I was having a boy, I knew that my step-son would be able to impregnate me one day. That's right sweetheart, you're going to have sex with mommy and give me a baby.