Taste of your own medicine
指某人遭受自己曾施加于他人的同样对待，体验因果报应。
用于描述某人被同样方式对待的报复情境。
英文释义
When something happens to you that you have done to someone else.
例句
After years of teasing, he got a taste of his own medicine when others mocked him.
典故来源
源自伊索寓言，狐狸让鹤用浅盘喝汤，鹤报复用长颈瓶，比喻以牙还牙。