The master would, with great authority, call his apprentices to bring this or that lead character, and if the young acolyte could not find it at once the seasoned instructor would mumble, "Idiot!"
師傅很有權威地要小學徒們找來需要的鉛字，小學徒一時找不著，熟練的老師傅順口一句：「笨！」