This book is about the name “Guy” and its slow, mostly unnoticed development over four centuries since it began on November 5, 1605, with the suddenly famous Guy Fawkes, who was arrested just in time just before he could light the fuse on 36 barrels of gunpowder to blow up the House of Lords. During those four centuries, “Guy” became “guy,” the name for an effigy of Guy Fawkes burned at bonfires every November 5 since. The effigy was called a “guy,” so that more than one effigy would be “guys,” Then, slowly, “guy” extended its signification into a name for a ragged, lower-class male, then any strangely dressed male, then a neutral everyday word for just any male, a “guy.” To top it off, the 20th century extended the plural “guys” or “you guys” to include all human beings, even women speaking to groups of women. None of these developments were made deliberately; the word just quietly slipped by, except for opposition from some Southerners and feminists who objected to it on the grounds that it wasn’t “y’all” and it wasn’t gender neutral. It has become all the more entrenched because now it’s the standard second-person plural pronoun for most of us who speak English.