Shout at her

You open your mouth and unleash your anger on Sarah. After 10 seconds of shouting, you stand there, catching your breath. Unfortunately, she doesn't seem fazed as she just simply faces you and laugh. She then gets out of her chair and advances toward you, coming in so close that her ample breast almost touches your chest. Your gaze meets hers and you stare into her crystal blue eyes for few moments. Silence. Suddenly, she knees you in your balls. You groan, clutching your groin.