The train rumbles along the tracks, a symphony of metal on metal, as a hooded figure, hidden in the shadows of their coat, watches with hungry eyes. Their target, a stranger in the crowded train car, unknowingly provides a perfect view of their round, firm ass. The voyeur's heart races as they imagine the tight, forbidden pleasure of sliding into that anonymous hole, the rhythm of the train matching the pace of their increasingly frantic strokes. The stranger shifts again, their jeans straining against their ass, and the voyeur can't help but imagine the feel of that ass against their cock, the taste of the stranger's sweat, the sound of their moans drowned out by the roar of the train.