薮やぶ蛇へびになる

expression, godan verb (-ru)

stir up a hornet's nest; make unnecessary trouble for oneself; put one's foot in one's mouth

Idiomatic expression meaning to do something unnecessary that ends up causing more trouble or work for oneself. Often used when someone's well-intentioned action backfires.

• 余よ計けいなことを言いって、薮やぶ蛇へびになるだけだよ。

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

• 彼かれは助たすけようとしたが、結けっ局きょく薮やぶ蛇へびになってしまった。

  He tried to help, but it ended up causing more trouble.