The instructor, ever the gentleman, begins the lesson with a gentle touch, guiding her hand to his already hardening cock. She looks up at him, innocent yet hungry, as she takes him into her mouth. She's a natural, her lips and tongue working in harmony, taking him deeper each time. He groans, his grip tightening in her hair. She looks up at him, eyes watering, but she doesn't stop. He can't hold back any longer, flipping her around and sliding into her from behind, right there in the open classroom.