A curious student lingers after class, hiding in the cloakroom, ears perked for any sign of his strict professor. He's rewarded with the sound of her unzipping her skirt, the rustle of fabric as she undresses. Her moans grow louder, more insistent, as she pleasures herself, whispering filthy nothings in his ear through the closed door. He strains to hear, his own body responding to her forbidden words, a secret listener to her taboo after-class ritual.