One of the games played by geisha (women who entertain at parties, by playing instruments, singing and dancing) is called "yakyuuken", where the geisha and their clients play janken, and the loser has to take off their clothes piece by piece.〔【出典】『これが分かれば日本通』(田仲邦子著)◆【出版社】株式会社ヤック企画 〕"YA03-053", "2424384"