(b1878-d1949) Luther "Bill" Robinson was a real person. A well known and much-loved vaudvillian tap dancer, he played every where, knew everybody and was even considered the "official" mayor of Harlem. His gambling and traveling ways caused him to end up in jail a time or two. His funeral was attended by everybody from Ed Sullivan to Joe DiMaggio to Jackie Robinson. (if you dont know these names, go look em up).
Like many legends, his escapades were embellished and expanded upon, resulting in the song that carries his name that has been covered by The Nitty Gritty Dirt Band, Bob Dylan and others.
Many now-strange remnants of late Jim Crow America, such as vaudville performers appearing in "black-faced" can be learned by reading about his life.

really saggy balls

A place where you can get good fried chicken and iced tea that's 99% sugar. They're usually found in the south, but there are a few up north. Mmmmm it's good.

(Or Bojangle's)

A "Famous Chicken 'n Biscuits" restaurant that can only be found in these states (according to their official website):

Georgia,
Tennessee,
Florida,
South Carolina,
North Carolina,
Virginia,
Maryland,
Missouri,
Arkansas,
Pennsylvania,
and New York.

They need to put more of there restaurants in Alabama, Mississippi, New Jersey, Delaware, Louisiana, Kentucky, West Virginia, and Eastern Texas.

Referring to a pair of testicles or "balls" ...preferably balls of large size and proportion.

another word for your nuts

KFC knockoff that is at once, confoundingly, both better tasting and redneckier than KFC, Popeye's or Church's ever dreamed of being.

English: Bo-JANG-les
Spanish: Bo-HAN-glaze
High-Falutin': Bo-JEAN-glay (JEAN as in Jean-Luc Picard).