From China Digital Space
叉腰肌 (chāyāo jī): iliopsoas (inner hip muscles)
This word became popular on the Internet after Xie Yalong, Deputy Chairman of the Chinese Football Association (China's national soccer association) sternly reprimanded the Chinese women's team for its loss at the 2008 Olympics, mentioning that the women needed to build their iliopsoas muscles. Netizens found Xie's remark to be an easy target for mockery, as none of the women on the team likely knew which muscle he was talking about. While the Football Association has been blamed for China's infamously poor performance in men's soccer, the woman's soccer team has a much better overall record.
Netizens found it hypocritical that the Football Association could criticize the relatively successful women's team for such an odd shortcoming when the Football Association itself was guilty of many greater failings. This obscure muscle group is used today to refer to instances in which someone with major faults is quick to point out the faults of others.
7 March 2014, by Samuel Wade
9 August 2013, by Mengyu Dong
26 June 2013, by Anne Henochowicz
12 April 2013, by Sophie Beach
20 March 2013, by Samuel Wade