搬石頭砸自己的腳 [ㄅㄢ ㄕˊ ˙ㄊㄡ ㄗㄚˊ ㄗˋ ㄐㄧˇ ˙ㄉㄜ ㄐㄧㄠˇ; ban1 shi2 tou5 za2 zi4 ji3 de5 jiao3] to move a stone and stub one's toe to shoot oneself in the foot (idiom) ◄ ►