<P>Did you know that . . . a soldier''s biggest social blunder is called <B>jack brew</B> - making yourself a cuppa without making one for anyone else? That twitchers have an expression for a bird that can''t be identified - <B>LBJ</B> (the letters stand for <B>L</B>ittle <B>B</B>rown <B>J</B>ob)? Or that builders call plastering the ceiling <B>doing Lionel Richie''s dancefloor</B>? Susie Dent does.<br><br>Ever wondered why football managers all speak the same way, what a cabbie calls the Houses of Parliament, or how ticket inspectors discreetly request back-up? We are surrounded by hundreds of tribes, each speaking their own distinct slanguage of colourful words, jokes and phrases, honed through years of conversations on the battlefield, in A&E, backstage, or at ten-thousand feet in the air. <br><br>Susie Dent has spent years interviewing hundreds of professionals, hobbyists and enthusiasts, and the result is an idiosyncratic phrasebook like no other. From the Freemason''s handshake t