厄やくネタ

noun

source of trouble; troublesome topic

Slang term for a subject, story, or piece of material that is likely to cause trouble, controversy, or awkwardness when brought up.

• あの話はなしは厄やくネタだから、会かい議ぎでは出ださないほうがいい。

  That topic is a source of trouble, so it's better not to bring it up at the meeting.

• 彼かれの過か去この失しっ敗ぱいは厄やくネタ扱あつかいされている。

  His past failures are treated as a troublesome topic.