She's been teaching him to cum more, and tonight's lesson is intense. His cock throbs in her hand as she works her magic, her long nails grazing his sensitive skin. She's patient, coaxing him closer to the edge with every stroke. He's close, his body tensing, but she wants more. "Cum for me, baby," she purrs. With a final, firm stroke, he loses control, cum blasting from his cock in thick ropes, coating her hand and the bed. She looks down at the mess, satisfied, "Good boy. That's what I like to see."