"Most readers [of Dr. Dan Streetmentioner's Time Traveler's Handbook of 1001 Tense Transformations] get as far as the Future Semiconditionally Modified Subinverted Plagal Past Subjunctive Intentional before giving up; and in fact in later editions of the book all pages beyond this point have been left blank to save on printing costs."
January 1, 1970
https://en.wikiquote.org/wiki/The_Hitchhiker's_Guide_to_the_Galaxy