expletives, curse words etc. you pick up while in Poland
Again, I'd never use such a book to know what to say but it can be helpful in helping newcomers figure out what is said.
No Polish textbook that I know of lists even the most common obscene expressions but being able to recognize them (or filter them out when used as filler words) is a good idea.
Traditional language teaching (for all languages) tends to exclude lots of really important stuff for understanding language in the real world.
Embolalia (esp filler words like.... like, that is, no, wiesz, ten etc)
Informal quotatitves "He's all 'No way!'" "On na to 'Mowy nie ma!'"
shadow expletives (sound a little like expletives but aren't obscene) "Fudge!" "Kurde!"