胳膊肘朝外拐 [ㄍㄜ ˙ㄅㄛ ㄓㄡˇ ㄔㄠˊ ㄨㄞˋ ㄍㄨㄞˇ; ge1 bo5 zhou3 chao2 wai4 guai3] the elbow turns the wrong way to favor an outsider instead of someone on one's own side (idiom) ◄ ►