In the dimly lit room, she stands, legs slightly parted, eyes fixed on the machine before her. Its cock, thick and veined, awaits her command. She's in control today, her fingers trembling slightly as she adjusts the settings - speed, depth, intensity. A low hum fills the room as she presses 'start'. The machine comes to life, its cock sliding into her, filling her completely. She gasps, her hips moving in rhythm, taking it all, fucking herself on the machine, lost in her own pleasure.