The teacher at the art class I attend has big breasts, but she's strict. When I played around with a nude model's body, she told me to take off my clothes, saying, "Understand how the model feels!" When I asked her if I could do it, she began to take off her clothes without hesitation. Her tight waist and big breasts that looked like they were about to burst were revealed. I reluctantly took them off, but my erection wouldn't go away. The moment the teacher saw that, her eyes changed color. "Inspiration is coming," she said, and suddenly started sucking. Then she got on top herself, shook her hips violently, and came over and over again, crying out loud.