taste of one's own medicine

Noun

idiomatic

(idiomatic, usually preceded by a) Harsh treatment inflicted on one who previously inflicted similar or equivalent treatment on others.

Japanese Meaning

自分自身が他人に仕掛けた苦い経験や処遇を、自分自身が受けること。すなわち、『自業自得』という意味。 / かつて自分が他者に行った酷い扱いと同様の扱いを、自分自身が受けること。

For those who cheat others, a taste of one's own medicine can be a harsh but necessary lesson.

他人を騙す人は、自分が他人に与えたのと同じ厳しい仕打ちを受けることが、厳しいながらも必要な教訓になることがある。

Sense（1）

(idiomatic, usually preceded by a) Harsh treatment inflicted on one who previously inflicted similar or equivalent treatment on others.

"The man's spirit is evil enough to frighten people away and we will drop stones upon him, so that he can learn the taste of his own medicine."