The Collaborative International Dictionary
to go down the drain
drained \drained\ adj. having lost much energy or emotion from vigorous activity; -- of people; as, the day's events left her completely drained of strength. 2. having resources completely depleted. Syn: depleted. 3. having no power remaining; -- of a battery. Syn: run-down. to go down the drain
to be consumed in profitless activity; to be wasted; to become worthless.
to vanish or cease existing.