Your step-sister decides to have a family gathering at her house during the summer. You show up a couple days before the rest of your family gets there to spend a little extra time with her. She reminisces about how she used to tease you when you lived at home together--walking around in her tiny bikinis, topless sunbathing, not caring if you gawked at her or not. In fact, she used to really enjoy it. Would you want to relive that experience again? As she tells the story, she lets you jerk off in front of her, and then lets you cum on her oiled up breasts.