A short, tight, hard, seamless loop. The only thing that moves is his hips, and his cock with them. Everything else is still. THE ONLY MOTION — HIS HIPS, his hips pull back and slam forward, driving his cock hard and deep into her, then pull back and slam in again. It repeats the same hard stroke over and over, fast and even, no pause, no change of rhythm, no change of depth. His cock never leaves her. Every stroke travels the same distance and returns to the same starting point. THE LOOP, perfect loop. The last frame is identical to the first frame. It repeats seamlessly. NO SCALING, his cock and her body stay exactly the same size. Nothing grows or shrinks. HIS BODY, his hips are the only part of him that moves, and they move only forward and back in one straight line. His legs do not move. His knees do not move. His thighs do not move. His feet do not move. His torso does not move. His shoulders do not move. His arms do not move. His hands stay gripping her hips. His head does not move. HER BODY, she holds exactly the same pose the whole time and does not move. Her head stays down on the floor and does not lift. Her neck does not move. Her face does not change. Her expression does not change. Her eyes stay as they are. Her mouth stays where it is. Her arms and hands stay where they are. The rope stays tied and does not slip. Her back stays bent and does not straighten. Her ass stays up and does not drop. Her legs stay straight and do not bend, do not spread, do not close. Her feet stay flat on the floor. Her whole body holds the same shape from the first frame to the last. HER HIPS — DEAD WEIGHT, her hips are heavy, pinned and dead weight. They do not move at all. They do not follow his thrust and she does not react. They do not rock, do not sway, do not bounce, do not roll, do not shift forward, do not shift back, do not lift, do not drop. Her hips stay in exactly the same place from the first frame to the last. THE FLOOR AND BACKGROUND, the floor does not move. The cabinet does not move. Nothing in the background moves or changes. THE CAMERA, completely still. No pan, no tilt, no zoom, no push in, no pull out, no shake, no drift, no angle change, no height change. The framing stays exactly the same. THE LIGHTING, does not change. No flicker. The shadows do not move. The brightness and colour stay the same. RULES, nothing morphs, warps, stretches, melts or wobbles. No new objects. No body parts appear or disappear. Nothing changes shape or size. The only thing that moves is his hips.