Nightmare Fuel / Guards! Guards!

  • When Lupine Wonse is so driven to madness by the dragon that he asks the head of the Assassins' Guild for help.
  • The idea of having a Dragon as a ruler is so absurd and terrifying as a metaphor for the absolute power of monarchy that all Sam Vimes could do is go Laughing Mad. Even more disturbing is seeing the people of Ankh-Morpork slowly adjust to live under these circumstances, up to accepting the necessity of Human Sacrifice. Vivat Draco!.
http://tvtropes.org/pmwiki/pmwiki.php/NightmareFuel/GuardsGuards