this is Matt Fargo's 'Dirty Japanese' a dictonary of slang, hip-terms, curses etc.... (almost every thing in here, even relativly neutral terms, is in the casual tense, and thus impolite in most situations, ranging from just non-formal to a mortal insult)
Dirty Japanese (PDF 22.51 MB)
http://d01.megashares.com/?d01=f1f90b2