The metro's hum vibrates through her as she sinks to her knees, the stranger's cock filling her mouth. She's a maestro, playing his body with her tongue, lips, and throat. He's a pawn in her game, helpless against her expert ministrations. The train's stops and starts punctuate their rhythm, each jolt pushing him closer to the edge. She feels his cock throb, tastes his salty essence, and swallows greedily, leaving him gasping and sheathed in her saliva as the doors open, revealing a crowded platform.