In the dim light of the porta-potty, Doug's hand moves furiously, his palm slapping against his cock with each stroke. The sound of his wanking echoes in the confined space, mingling with the distant hum of traffic. His cockhead glistens with precum, his balls tighten, and with a final, desperate thrust, he comes, hot ropes of cum splattering onto the filthy floor, marking his territory in this sordid, anonymous tryst.