Pyramids (Discworld, #7)

by Terry Pratchett

There was not a lot that could be done to make Morpork a worse place. A direct hit by a meteorite, for example, would count as gentrification.

The other legend, not normally recounted by citizens, is that at an even earlier time a group of wise men survived a flood sent by the gods by building a huge boat, and on this boat they took two of every type of animal then existing on the Disc. After some weeks the combined manure was beginning to weigh the boat low in the water so—the story runs—they tipped it over the side, and called it Ankh-Morpork.