five and fly
n.— «As West Point’s academic reputation has improved, more and more graduates are serving their mandatory five years, then leaving the army: five-and-fly, as it’s known. In essence, the government is spending incredible sums of money to train intelligent and capable soldiers through this four-year university program, but increasingly the return is only five years of service.» —“After Four Years at West Point, David Lipsky Still Wants More” by David Weich Powells Aug. 6, 2003. (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...