Just Clean Up
Dining at a restaurant often comes with the expectation that you'll clean up after yourself, especially if the establishment does not offer table service. Even in such cases, it is common courtesy to tidy up your dining area. However, some patrons choose to disregard this responsibility, as exemplified by the scene in this McDonald's.
The failure to clean up after oneself in such a scenario, when trash cans are readily available nearby, reflects a lack of consideration for the restaurant staff and fellow diners. It highlights the importance of personal responsibility and etiquette when dining out.