* ItWasHisSled: If you can some how manage to hear anything about this book without seeing the phrase [[spoiler:'''"THAT! IS!! NOT!!! MY!!!! COW!!!!!"''']], you are very lucky.
** AllThereIsToKnowAboutTheCryingGame: For some people, that's ''all'' they know about the book, especially since the spoiler in question is almost always present with little to no context.
** Related to Nobby's suggestion under TrueArtIsIncomprehensible below. There ''is'' a case of [[http://en.wikipedia.org/wiki/Isabella_Stewart_Gardner_Museum#Art_theft_of_1990 a museum]] leaving the empty frames of stolen artwork on display.
** During the magically-accelerated coach ride, Vimes notices that the landscape appears slightly bluish when he looks ahead, and slightly reddish when he looks behind: [[http://en.wikipedia.org/wiki/Relativistic_Doppler_effect Blueshift and redshift]][[note]]light on the disc moves at about the speed of sound[[/note]].
* TrueArtIsIncomprehensible: There are two "modern art" pieces by Daniellarina Pouter: ''Don't Talk to Me About Mondays'', which consists of a pile of rags, and ''Freedom'', which consists of a stake to which Ms. Pouter had been nailed after Lord Vetinari had seen her previous piece. (She was delighted and is planning to nail herself to a wide variety of objects in the near future as a special exhibition.)
** Despite that, Nobby's suggestion that the empty frame where ''The Battle Of Koom Valley'' had been before it was stolen be reclassified as a piece of modern art named ''Art Theft'' was rejected.
* TheWoobie: You can't help but feel sorry for Brick after a while. Maybe even instantly. Helmclever as well.