What does the greatest monarch on the proudest throne is obliged to sit on his buttock mean?

The phrase "the greatest monarch on the proudest throne is obliged to sit on his buttock" suggests that no matter how powerful or esteemed a person may be, they remain fundamentally human and subject to the same basic realities of life. It highlights the idea that all individuals, regardless of status, must confront their own vulnerabilities and limitations. In essence, it serves as a reminder of humility and the shared human experience.