The Professor, ensconced in his leather armchair, indulges in his secret vice. His fingers dance along his length, from root to tip, savoring every ridge and vein. He teases his slit, collecting the bead of precum, using it as lube to slick his shaft. His strokes are steady, purposeful, bordering on punishing. He's a connoisseur of control, edging himself until his body quivers with unspent desire, yet he denies himself release, reveling in the exquisite agony of delayed gratification.