To find weaknesses, errors or imperfections (in).
poke holes in
To criticize someone by finding flaws or weaknesses in their work or t …
shoot holes
Find faults.
pick someone's brain
To seek information from someone knowledgeable; to ask questions of so …
pick corners
To choose a preference (as in predicting which boxer will win a match) …
pick up the tab
To accept a bill and pay it, especially at a bar or restaurant.
pick of the litter
The best person or item in a group; the best that one has to offer.