green language
n.— «Instead, they should be taught English as a second language, Robinson said, knowing that they’ll need to speak properly in order to get a job and earn a living.…Robinson calls standard English the “Green Language” as a way to equate it with earning money.» —“Ed official stirs debate by backing street slang” by Jiquanda Johnson Flint Journal (Mich.) Mar. 2, 2005. (source: Double-Tongued Dictionary)