On another recent Mudcat thread, some one mentioned "redd up". This is Pittsburghese for cleaning up your home. That phrase probably comes from the word "ready" as in making a home "ready" for company/guests.

However, in my experience few African Americans who live in Pittsburgh, Pennsylvania and its surrounding communities use the term "redd up." I think that this is a prime example of how different populations within the same city at the same time may be "separated by a common language".