Demi Lopez, the quintessential stepsister, decides to help her stepbrother study for his medical exam in a unique, intimate way. She invites him to their room, dressed in a revealing outfit, and begins to tease him mercilessly. She runs her fingers through his hair, whispering exam answers in his ear, her breath hot and inviting. He tries to focus, but her scent, her proximity, and her wandering hands are too much. She takes his hand, guiding it to her ass, encouraging him to squeeze and grope. She turns around, bending over, her skirt riding up, revealing her bare cheeks. She looks back at him, a wicked smile on her face, and says, "Don't you think you should practice your physical exams too?"