pick a hole in

pick a hole in or pick holes in  {v. phr.},  {informal}
To find a mistake in or things wrong with; criticize; blame.
The witness said he had been walking in the moonlight last Sunday, but the lawyer picked a hole in what he said by proving that there was no moon and that it rained Sunday night.
Mary is always picking holes in what the other girls do.
Compare: FIND FAULT.
Categories: blame {informal} {v. phr.}