"Concrete jungle" refers to the urban city; first used in cinema by Academy Award winning "The Lost Weekend" (1945), directed by Billy Wilder, starring Ray
Milland.
Milland's character,
Don Birnam, a chronic alcoholic, and binge drinker, speaks of others with the same condition in the "concrete jungle" as the camera pans across a skyline of Manhattan as an epilogue to the story.
Out there in that great big concrete jungle, I wonder how many others there are like me... poor bedeviled guys, on fire with thirst; such comical figures to the rest of the world, as they
stagger blindly towards another
binger, another bender, another
spree.