can't punch (one's) way out of a paper bag

can't punch (one's) way out of a paper bag

Extremely weak, ineffectual, or incompetent. You want to fight me? You can't punch your way out of a paper bag! Don't assign that project to her, she couldn't punch her way out of a paper bag!
See also: bag, of, out, paper, punch, way
Farlex Dictionary of Idioms.

can't punch one's way out of a paper bag

Be inept, as in Ask him to program the VCR? He can't punch his way out of a paper bag. This hyperbolic term for extreme ineptitude originally was an expression of contempt for a weak or cowardly boxer. [Slang; c. 1910]
See also: bag, of, out, paper, punch, way
The American Heritage® Dictionary of Idioms by Christine Ammer.
See also:
  • can't punch one's way out of a paper bag
  • can't punch (one's) way out of a wet paper bag
  • couldn't punch (one's) way out of a paper bag
  • he, she, etc. couldn't punch his, her, etc. way out of a paper bag
  • couldn't fight (one's) way out of a paper bag
  • couldn't fight your way out of a paper bag
  • couldn't fight (one's) way out of a wet paper bag
  • weak sister
  • a case of the blind leading the blind
  • case of the blind leading the blind