Sophie married my step-dad a while back, and ever since then I've been masturbating while thinking about fucking her. Today I got my chance. Turns out my step-dad doesn't want to get my step mom Sophie pregnant. So she figures she'll just have me get her pregnant instead. We have to make it a quickie, step-dad can be home at any moment, but her pussy is warm and wet and I fill her with a huge load of my cum.