One of the rarely-listed accents/regional dialects in linguistic studies. This big city accent is basically the lower-Midwestern nasal twang typical of southern Ohio, Indiana, and north/northwestern Kentucky mixed with a lot of northern Chicago/Cleveland influence. Locals will usually pronounce "a's" like "e's". For example, a Greater Cincinnati Area local would say "cless" instead of "class". In addition, locals will also say words that are characteristic of the Upper Midwest, such as "pop" and "you guys".
Cincinnati Urban is one of the accents/regional dialects that falls into the "Urban dialect" category on the U.S. Map of Regional Dialects. Along with Cincinnati Urban, there is also Boston Urban, Chicago Urban, New York Metropolitan Urban, and San Francisco Urban.