There's something special about a lexicon in which more than half the entries begin with the same letter. The F-Word earned its title the hard way: editor Jesse Sheidlower and the staff of Random House combed vast numbers of books, magazines, films, and other works for references to the most beloved, least printable word in the English language and all its variations. There's some great reading here among the hundreds of citations, from the colorful dialogue of Gore Vidal to the military's creative use of intensifiers to boost morale. Of special interest are the acronyms and abbreviations incorporating the Word; after reading the entry for "BUFF," you might think twice before complimenting your gym-going friends.