The leaders or bosses get their food last.
To show that leaders are responsible for other human beings, and to ensure that the team knows they will be taken care of by their leaders. It helps build trust between leaders and teams.
Based on Simon Sinek's book "Leaders Eat Last: Why Some Teams Pull Together and Others Don't"
Check out these great links which can help you dive a little deeper into running the Leaders Eat Last practice with your team, customers or stakeholders.