This video features: Little Puck - https://www.manyvids.com/Profile/419692/Little-Puck/Store/Videos/ I have a talk with my daughter about how embarrassing her small breast size is. Her boobs aren't growing with the rest of her body. I explain to her that she will never have a boyfriend if her tits remain the same size. You can only have big tits to keep a man happy. I examine my daughters tits as I tell her that my secret to having big breasts is her brothers sperm. After my son gave me a cream pie is when my big fat tits really grew. She is very excited for the chance to finally have big tits just like mommy. Your sister is very eager to drain your balls to make her tits grow. After your sister and I ask for this big favor you are a bit hesitant at first, but we assure you that we will do whatever it takes to make sure you enjoy this process of helping your sister. You request to watch her suck mommy's tits and then suck your cock. Finally, it's time she is wet and your are hard. She lays back and takes her brothers big cock as you fuck her hard until you fill her up with all your jizz. Her tits are swollen and she can feel them growing. But she wants even more of her brothers jizz. She encourages you to jerk off until you cum in her mouth. Her mouth is overloaded with your big load that she can hardly swallow it all. She wants her tits full of her brothers sperm. Your sister will soon have big slutty tits just like mommy.