not worth a whistle

not worth a whistle

Worthless or useless to such an extent that the person or thing in question does not merit the effort of being whistled at. I wouldn't have too much faith in Bobby—he's not worth a whistle, and this business will probably just become another in a long line of failures for him. I was so excited when my grandpa said he'd give me his car, but this old clunker isn't worth a whistle.
See also: not, whistle, worth
Farlex Dictionary of Idioms.
See also:
  • worth the whistle
  • whistle up
  • not worth a plug nickel
  • be not worth a plug nickel
  • not worth beans
  • not worth a continental
  • not worth a plugged nickel
  • a waste of space
  • for the birds, it's/that's
  • not worth a tinker's damn