Picture a tall, dark figure, surrounded by cornfields... NO, YOU CAN'T RIDE A CAT. WHO EVER HEARD OF THE DEATH OF RATS RIDING A CAT? THE DEATH OF RATS WOULD RIDE SOME KIND OF DOG. Picture more fields, a great horizon-spanning network of fields, rolling in gentle waves... DON'T ASK ME I DON'T KNOW. SOME KIND OF TERRIER, MAYBE. ...fields of corn, alive, whispering in the breeze... RIGHT, AND THE DEATH OF FLEAS CAN RIDE IT TOO. THAT WAY YOU KILL TWO BIRDS WITH ONE STONE. ...awaiting the clockwork of the seasons. METAPHORICALLY.
Terry PratchettDrinks like this tend to get called Traffic Lights or Rainbow's Revenge or, in places where truth is more highly valued, Hello and Good-Bye, Mr. Brain Cell.
Terry PratchettUnseen University was much bigger on the inside. Thousands of years as the leading establishment of practical magic in a world where dimensions were largely a matter of chance in any case had left it bulging in places where it shouldn't have places. There were rooms containing rooms which, if you entered them, turned out to contain the room you'd started with, which can be a problem if you are in a conga line.
Terry Pratchettat least nine-tenths of all the original reality ever created lies outside the multiverse, and since the multiverse by definition includes absolutely everything that is anything, this puts a bit of a strain on things. Outside the boundaries of the universe lie the raw realities, the could-have-beens, the might-bes, the never-weres, the wild ideas, all being created and uncreated chaotically like elements in fermenting supernovas. Just occasionally where the walls of the worlds have worn a bit thin, they can leak in.
Terry Pratchett