The latest in the seemingly endless line of upper-middle brow treatises on bad words to come to my attention (thanks sionnach!) is Depraved and Insulting English, by Peter Novobatzky and Ammon Shea.
I haven’t read it yet, but judging from reviews and the tidbits sionnach has graced us with, many entries look almost medical–the authors seem to draw more on Latin and Greek than stalwart Anglo Saxon. Which probably makes it all the easier–and more fun!–to slip innocuous-sounding gems like lotium into conversation.