The teacher's thick cock stretches the student's mouth wide, her eyes watering as she tries to take him deeper. She's never had a cock this big, and the challenge excites her. She uses her hands, stroking him in rhythm with her mouth, savoring the feeling of his veiny shaft against her tongue. He groans, his hips moving slightly, fucking her mouth gently. She looks up at him, seeing the pleasure she's giving him, and sucks harder, eager to make him come undone.