Left image: The image shows the walk sign turned to green on a traffic signal.
Right image: The image shows an empty road with only one car on the road. The car is waiting for the walk sign to turn to red so that it can cross the zebra crossing.  There is no one else on the road except from the car.
The image is funny because while walk signs are very useful for pedestrians to be able to cross roads safely, the become unnecessary and annoying for car drivers when these signals turn green even when there is no pedestrian tring to cross the road.