Definition of be unable to punch one's way out of a paper bag in English:

be unable to punch one's way out of a paper bag

phrase

informal
  • Be completely ineffectual or inept.

    ‘I couldn't punch my way out of a paper bag, but I'm a boxer at heart’
    ‘he couldn't act his way out of a paper bag’
    • ‘For someone who Johnny Rotten described as 'unable to punch his way out of a paper bag',...his rocket to ruin was spectacularly in the limelight.’
    • ‘There were comic books featuring ‘The Purple Martin’ who was unable to punch his way out of a paper bag but was a super hero otherwise.’