This has become the popular name for Millenium Park's famed stainless steel sculpture, "Cloud Gate." It was completed in 2005.
Milorganite is the brand name of a fertilizer that the Milwaukee Metropolitan Sewerage District started producing during the 1940s. Yes, it was made from the sewerage in Milwaukee treatment plant. The name is a contraction of Milwaukee Organic Nitrogen.
A style of housing dating back to the 17th century, similar to a town home; very common in the older parts of D.C.
A reference to Scottsdale's "upper-crusty" atmosphere.
Dustin Hoffman (as Ratso Rizzo in Midnight Cowboy) yells this at a car driver who almost runs him over in a crosswalk. Use whenever cars, cabs, bikes, or others almost do the same to you as you cross a street.