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]
Words nearby can't punch one's way out of a paper bag
can't help, can't hit the broad side of a barn, can't hold a candle to, can't make a silk purse out of a sow's ear, can't make head or tail of, can't punch one's way out of a paper bag, can't see beyond the end of one's nose., can't see the forest for the trees, can't seem to, can't stand, can't wait
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.