虫むしの居い所どころが悪わるい

expression, i-adjective

irritable; in a bad mood; cranky

Idiomatic expression describing someone's foul mood, as if a bug inside them is unsettled. Often used when someone is touchy or easily angered for no clear reason.

• 今日きょうは上じょう司しの虫むしの居い所どころが悪わるいみたいで、みんなピリピリしている。

  The boss seems to be in a bad mood today, so everyone is on edge.

• 虫むしの居い所どころが悪わるいときに話はなしかけると、怒おこられるかもしれない。

  If you talk to him when he's irritable, you might get yelled at.