Nonsense, originally a colloquialism from Guangzhou, Guangdong and other places, means a person who does and says things that are incomprehensible and uncentered, whose words and actions have no clear purpose, are vulgar and random, and whine, but not without reason. The radio duo of soft and hardened tens and movie star Stephen Chow are both famous for this.
From the point of view of its concept and connotation, Biting and Chewing has made two interpretations: one says that "Li Tou" means "Lai Tou" because the Cantonese words for "Li" and "Lai" are the same. "来" in Cantonese, it is obvious that "無哩头" means no cause, no origin, no reason, no head, no brain, and inexplicable; one says that "哩头" means "准则", which means "guidelines", and the other says that "哩头" is """ in Cantonese. "Guidelines", "No Li Tou" is "no guidelines, no measure, mess", "from which derives the meaning of jokes, funny, etc.
Expanded:
Baidu Encyclopedia - Nonsense
Baidu Encyclopedia - Stephen Chow