the biter bit
自食其果的人，也就是瞧不起别人的人被别人嘲笑或欺负了
书面/口语·描述因果报应
英文释义
to see someone get a taste of their own medicine or experience a negative consequence as a result of their own actions
例句
He tricked his friend, but later got tricked himself—the biter bit.
典故来源
源自伊索寓言或民间故事，指咬人者反被咬，比喻害人者终自食其果。