down the tube(s)

down the tube(s)

Awry; in a state of deterioration or failure. You got a C average? Boy, your grades have really gone down the tubes this semester. We had big plans for our trip, but the terrible weather made it all go down the tube.
See also: down

down the tube (or tubes)

lost or wasted. informal
2001 High Country News I've already lost my alfalfa crop; that's about $20,000 down the tubes.
See also: down, tube