Don Carlos' 'Balls jerk' captures the raw, public thrill of a man pleasuring himself in a crowded toilet. His heavy, low-hanging balls sway gently, enticing and distracting nearby stall occupants. The tension builds as he strokes his stiff cock, the sound of his hand working his meat echoing through the tiled room. His balls tighten, ready to release their load, as he tries to remain quiet in the bustling restroom.