The Perfect Insult for Every Occasion: Lady Snark's Guide to Common Discourtesy by A.C. Kemp
This book tosses aside fluffy new age sensitivity in favour of embracing your inner wolverine. It explores the subtleties of each topic, including gender differences, word histories, and dangerous double meanings. Chapters include how to teach assertive language to a child, put-downs by and for each gender, put-downs for the office, and how to handle courtship. It is filled with boxes, legal disclaimers, and etymology, it's naughty, but very funny.