The Mummy knows best of McMasterdonia is a gargantuan, cultured nation, ruled by The Queen Mother with an iron fist, and remarkable for its ubiquitous missile silos, rampant corporate plagiarism, and state-planned economy. The compassionate, cynical, humorless population of 27.832 billion McMasterdonians are ruled with an iron fist by the dictatorship government, which ensures that no-one outside the party gets too rich. In their personal lives, however, citizens are relatively unoppressed; it remains to be seen whether this is because the government genuinely cares about its people, or if it hasn't gotten around to stamping out civil rights yet.

The large, corrupt, socially-minded, well-organized government juggles the competing demands of Education, Healthcare, and Environment. It meets to discuss matters of state in the capital city of Intelligentsia. The average income tax rate is 88.4%, and even higher for the wealthy.

The frighteningly efficient McMasterdonian economy, worth a remarkable 4,147 trillion Livres a year, is driven entirely by a combination of government and state-owned industry, with private enterprise illegal. However, for those in the know, there is a slick, highly efficient, quite specialized black market in Tourism, Information Technology, Arms Manufacturing, and Book Publishing. The private sector mostly consists of enterprising ten-year-olds selling lemonade on the sidewalk, but the government is looking at stamping this out. Average income is an impressive 149,031 Livres, and distributed extremely evenly, with practically no difference between the richest and poorest citizens.

Stranded mountaineers can watch livestreamed footage of their rescues, the question "please would you...?" is usually laden with passive aggression, political talk shows often have children as guests whenever they need commentary on world religions, and Bigtopian relations have become a minefield. Crime, especially youth-related, is totally unknown, thanks to a well-funded police force and progressive social policies in education and welfare. McMasterdonia's national animal is the McMasterdonian Lion, which frolics freely in the nation's many lush forests, and its national religion is Flemingovianism.

McMasterdonia is ranked 242,237^th in the world and 3,429^th in The North Pacific for Largest Cheese Export Sector, scoring -1.26 on the Mozzarella Productivity Index.