In a hidden corner, a man, driven by pent-up desire, gives in to his carnal needs. He unzips, his cock springing free, already rock hard. He spits into his palm, lubing up his shaft as he begins to stroke, his grip tight and urgent. His other hand reaches down, cupping his balls, rolling them gently as he picks up speed. His body tenses, and with a final, low groan, he comes, his cock pulsing streams of hot cum onto the grimy floor.