Secret Lives in "what is a door nail"

The final what is a door nail is shot in complete darkness—only the glow of a single violet neon wand illuminates her skin as it travels across every sensitive inch. You never see her face, only curves and shadows and the electric path of light in what is a door nail. Each time the wand nears her center, the glow intensifies with her breathing. When she finally presses it home in what is a door nail, the neon flares white-hot, silhouetting her arched spine in a single perfect frame. Release is sound only—long, broken, animal. The light dies slowly afterward, leaving you in darkness that still pulses with the memory of what is a door nail. You’ll replay it a thousand times and never see the same thing twice.