also: くそじょうし
noun
asshole boss; shitty boss
Vulgar, derogatory term for a terrible boss. Used in casual, often frustrated speech.
うちのクソ上司はいつも無理な仕事を押し付けてくる。
My asshole boss always pushes unreasonable work on me.
クソ上司のせいで、また残業だ。
Because of that shitty boss, it's overtime again.
Compound of クソ (kuso, 'shit, crap') and 上司 (jōshi, 'boss'). The prefix クソ is a common vulgar intensifier.