胯下之辱

Explanation: Crotch: between the two legs. Climb from the crotch of shame. 　　Source: "Records of the Historian Huaiyin Hou Biography" in Huaiyin insult believers slaughter, saying 'if, although brought up well with a sword, in Qingqie ears. 'Public disgrace, called' Letter to death, stab me, can not die, out of my crotch. 'So what, as the letter, exhort the crotch, Po volts. Letter of a city everyone laugh, that scared. " Thesaurus:  Crotch Po V, wormwood