Left image: The image shows the living area in a home. The room has a big TV hanging on the wall.
Right image: The image shows the living area in a home. The room has a big TV hanging on the wall playing a movie. The movie is not using the entire screen and top and bottom areas of the screen is unused.
The image is funny because while the room has a big TV with a big screen, the movie being played on it does not use the entire screen.