At a family party your sister in law finds you hiding away in a separate room. She peeks in and asks if you two can talk. She is nervous and shy in bringing it up, but she confesses that she has been having trouble getting pregnant. She knows that you and her sister have gotten pregnant many times and she hesitantly asks you if you would be willing to help her. Family always helps each other out, so of course you agree! The two of you know it's nothing more than that, but still you two are keeping it very professional. She is really impressed by your cock and finds herself becoming hornier and even more into it. You tell her that taking her tots out and talking dirty would help you be able to cum faster so she does it for you. As you two do multiple positions you're both really really into it! You cum hard inside of her ans she can feel you cum dripping deeper and deeper! She flirtatiously asks you if you could go again, just to be sure it works! You fuck her doggy style and cowgirl again until you explode another huge load into her! You see it dripping and hear her pussy expelling the extra cum and air you plowed inside of her! It's so hot and the two of you give each other knowing looks that this probably won't be the last time this happens. Better get back to the party before anyone notices how long the two of you have been gone!