tongue-twister (n.)youdaoicibaDictYouDict[tongue-twister 词源字典]
1875, in reference to an awkward sentence, 1892 of a deliberately difficult-to-say phrase, from tongue (n.) + agent noun from twist (v.). The first one called by the name is "Miss Smith's fish-sauce shop."[tongue-twister etymology, tongue-twister origin, 英语词源]