Tony Thorne explores the teeming and ever-changing underworld of English, bringing back intriguing examples of eccentricity, irreverence and anonymous wit from the linguistic frontline. It is a definitive and indispensable guide, containing more than 6,000 expressions and over 15,000 definitions from across the English-speaking world. So if you have ever wondered who or what is an oof, where you would expect to find a gurgler, what you would do if someone caned your biffs, and just why you would need a bozo-filter, then this book is your guide.