藪やぶ蛇へび

noun

unnecessary trouble brought upon oneself; stirring up a hornet's nest

Idiomatic expression derived from the proverb 藪をつついて蛇を出す (poking a bush and flushing out a snake). Used when someone's action creates a problem that could have been avoided by leaving things alone.

See also: 藪をつついて蛇を出す

• 余よ計けいなことを言いったら、やぶ蛇へびになるだけだよ。

  If you say something unnecessary, you'll just stir up a hornet's nest.

• 彼かれの過か去こを探さぐるのはやぶ蛇へびだ。

  Digging into his past is asking for trouble.