Michelle Lovric and Nikiforos Doxiadia Mardas, How to Insult, Abuse, and Insinuate in Classical Latin (Barnes and Noble, 2004)
Exactly what it claims to be: a tome on how to insult, abuse, and insinuate in classical Latin. A compendium of quotes (bilingually presented, of course) from ancient Roman authors, poets, and statesmen of questionable taste. The translation is necessarily loose in places (and loose in others for humor's sake), but still. It's fun to insult someone and not have them understand a word of it. ****