In the dim, hushed atmosphere of his study, Professor indulges in a private, taboo ritual. His hand, steady and sure, strokes his rigid cock, a act of 'verificação' that's become his guilty pleasure. He imagines the forbidden, the students he teaches, as he luxuriates in the sensation, his breath hitching, his body tensing. It's a secret, sinful moment, a release from the constraints of his profession.