You’re over at your girlfriend’s place to hang out and see her sister sitting in her bed, her perky nipples poking through a thin grey t shirt. She informs you that her sister is running late at her book club meeting and won’t be home till a bit later. Looking you up and down she asks you something you never expected: if you’ll be her sperm donor. She says she wants a baby, and she wants it the old fashioned way. “It’ll be our little secret,” she says. Soon she’s on her hands and knees, her ass facing you as she struggles to fit your fat cock in her tight little pussy. She slowly manages to sink down lower and lower, taking more and more of your cock as she moans and her ass jiggles in your face. She flips around and takes you on her back, her pink lips tight around your shaft as you pound her. She begs you to cum, and you fulfil her wish, your seed dripping out of her pussy.