The schoolgirl, her heart pounding with excitement and fear, slips her hand into her panties, seeking relief from the constant teasing of her massive, hidden cock. She strokes herself, her moans muffled by her desk, her big ass squirming with each thrust of her hand. She's so close, her body tensing, when she hears footsteps approaching. Panicked, she tries to stop, but it's too late. She cums hard, her body convulsing, her cock pulsing in her pants, just as the teacher rounds the corner.