重箱の隅を突く

じゅうばこのすみをつつく

重箱の隅をつつく重箱のすみをつつく重箱の隅を突付く

[juubakonosumiwotsutsuku]

Definitions

1.expressions (phrases, clauses, etc.); Godan verb with 'ku' ending

to nitpick; to complain about trifles