A daring exhibitionist, clad only in a backpack, finds solace in the rumble of an approaching freight train. He positions himself along the tracks, the wind whipping around him, as he begins to stroke his hardening cock. The train's horn blasts, adding to his thrill, as he jerks off feverishly, the diesel fumes mingling with his musk. He knows he's taking a risk, but the thought of being caught only intensifies his pleasure.