The way the people of the Kansai region of Japan speak. It could be compared to the Boston Accent of the United States. They have their own pronunciation, and own strange slang terms that are different, and almost unintelligable from the way other japanese is spoken.

Some japanese say that they speak in a very stern, and direct tone, and that it sounds menacing, and almost angry. They also have a few of their own strange words, such as the famous...
Okinee: Thanks, Arigato, Domo
Nan-day-ya-nen: Why!?, or Why the hell!?

This dialect is especially strong in cities such as Osaka, Kyoto, and Otsu.