The rhythmic clacking of the train tracks sets the pace as this unknown woman devours the husband's thick, veiny cock. Her hands grip his ass, pulling him deeper into her warm, wet mouth. She sucks with such intensity that her makeup runs, tears streaming down her face. The husband grunts, fucking her face with abandon, while his wife watches, her own pussy throbbing with arousal, ready to take her turn once the stranger has had her fill.