Bang-out for fine grades

As any other great schoolgirl, Polly Yangs wants to get excellent grades for her efforts. She comes to 1 of her tutors expecting to improve her grades. He checks her prowess and even gives her a test to make sure she learned everything he told her. Unluckily, he finds her efforts not sufficient to get her the grades she wants. Polly Yangs senses sad, but the instructor tells her there is another option for achieving her aim. Polly Yangs perceives astonished but then gives up to the stud and his rock-hard man rod.