搬起石頭砸自己的腳 [ㄅㄢ ㄑㄧˇ ㄕˊ ˙ㄊㄡ ㄗㄚˊ ㄗˋ ㄐㄧˇ ˙ㄉㄜ ㄐㄧㄠˇ; ban1 qi3 shi2 tou5 za2 zi4 ji3 de5 jiao3] to crush one's own foot while trying to maneuver a rock (to a cliff edge, to drop on one's enemy) (idiom) hoisted by one's own petard ◄ ►