the answer's a lemon

the answer's a lemon

old-fashioned A derisive or dismissive answer to a question that is impertinent, foolish, or ridiculous. Primarily heard in UK. A: "The government is in service of us, so why should we have to pay taxes to them?" B: "The answer's a lemon—maybe the next time you have a thought, keep it to yourself."
See also: lemon
Farlex Dictionary of Idioms.

the answer's a lemon

the response or outcome is unsatisfactory. informal
A lemon here is used to represent a bad, unsatisfactory, or disappointing thing, possibly because the lemon is the least valuable symbol that can be achieved by playing a fruit machine.
See also: lemon
Farlex Partner Idioms Dictionary
See also:
  • cool story, bro
  • hang
  • hang (something)
  • hang something
  • old codger