Left image: image shows a gallery of seats. Someone is holding a ticket for the seat in Row 3, Seat 18, which is vacant.
Right image: a person walking through the 3rd row of gallery seats filled with audience to get to the 18th seat in the row, which is vacant.
The image is funny, as the person has a ticket of a seat that is on the leftmost end of the gallery. However, the person has entered from the other end, and is going through a sea of seated people to get to the vacant seat. This would cause inconvenience to the people in the row, and would probably take a longer time to reach the seat.