Before you purchase a copy just remember this is a dictionary for CANTONESE slang. Cantonese being one of the many Chinese dialogues, obviously not every Chinese speaks Cantonese.
So having said that, I must inform everyone that Cantonese has the most vivid descriptions and usages of slang of the entire Chinese language (yet, being the least awful sounding). How do I know, because I was born in that wonderful city of Hong Kong! It's my native tongue, so trust me, we know how to slang in style~~ However, not all Cantonese slangs are entirely cruses nor are they offensive, you can use many of them safely in any environment. And this book presents the best of them in their original forms, including the usage of each slang and how to apply it within your speech. I am amazed by how accurate the dictionary truly is. The definations are all better than I thought they would be (as well as its entertaining value)! So if you are ever tired from repeating the same old phrases over and over again, then try adding a few Cantonese slangs into your speech to spice things up a little bit.