open the kimono
v. phr.— «It was believed that the wolf was shameful of sexual things, having no strong sexual instincts. He would never disclose his organ, but hide it behind his hanging tail. Should a person perchance see his sexual act, he or she would have to open the kimono and disclose his or her own organ, so as not to shame the wolf.» —“The Goblin Fox and Badger and Other Witch Animals of Japan” by U.A. Casal Folklore Studies , 1959. (source: Double-Tongued Dictionary)