The classroom door clicks shut, leaving only the sound of her racing heart and his heavy breathing. The teacher, a man of experience, watches as she nervously bites her lip, her eyes darting between his crotch and his face. He steps closer, his hand cupping her chin, tilting her head up. "You're a fast learner," he growls, pushing his trimmed cock past her lips. She gags slightly, her inexperience evident, but she's eager, and he guides her, his hands tangling in her hair, helping her take him deeper. Her tight, wet mouth feels like heaven, and he can't wait to explore her slit next.