The metro rumbles, echoing the throbbing desire between the two women. The blonde's fingers find their way inside the other, stroking her wetness, making her moan softly. She bites her lip, suppressing a cry of pleasure as her companion's thumb circles her clit. Their bodies press together, breasts heaving against each other, panting breaths mingling. The metro stops, and they freeze, hearts pounding, before the doors close again, and they continue their illicit dance, their secret tryst in the city's underbelly.