Your girlfriend was over last night and Mommy was sneakily listening to the fun you both were having. When you come home the next day she confesses to listening and mentions being jealous of how much your girlfriend seemed to be enjoying herself. Mommy explains that she needs some action like that and needs you to breed her. She has been trying to get pregnant but obviously her husband just isn't doing it right. She's so needy for your cum you just can't help but give in to mommy.