《史记·七十列传·苏秦列传》
凭着大王的贤明，又拥有韩国强大的军队，却蒙受做牛后的丑名，我私下为大王感到羞耻啊。 
夫以大王之贤，挟彊韩之兵，而有牛後之名，臣窃为大王羞之。 
With the King's wisdom and the powerful army of Korea, the King has to bear the shame of being a cow's anus. I feel ashamed for the King in private.