yellow bird
n.— «For another, ward leaders have been known to take street money from candidates, promise support and then not deliver. There is a name for this, too. These ward leaders are called “yellow birds,” after the old airline commercial that touted vacation flights to Florida. They take your money and metaphorically (and sometimes literally) head south.» —“Cash and Carry (the City)” by Tom Ferrick Jr. in Philadelphia, Pennsylvania New York Times Apr. 22, 2008. (source: Double-Tongued Dictionary)
Further reading
If you speak a second or third language, you may remember the first time you dreamed in that new tongue. But does this milestone mean you’re actually fluent? And a couple’s dispute over the word regret: Say you wish you’d been able...
While reading Great Expectations (Bookshop|Amazon) by Charles Dickens, a listener in Arlington, Texas, is surprised when one of the characters inherits some money, which Dickens describes as a cool four thousand. Were they really using cool that way...