A sudden, insistent throb draws his attention downward. His penis, once dormant, now stirs with a life of its own, straining against the confines of his clothing. He hesitates, then gives in, unzipping to expose his hardening flesh. His hand wraps around the growing erection, feeling the pulse of blood as it engorges, the skin silken smooth. His breath hitches, his movements quickening, as he races towards the inevitable conclusion.