North Korea has forbidden people from making sarcastic comments about Kim Jong-un or his totalitarian regime in their everyday conversations.

Even indirect criticism of the authoritarian government has been banned, Asian media reported.

Residents were warned against criticising the state in a series of mass meetings held by functionaries across the country.

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“One state security official personally organised a meeting to alert local residents to potential ‘hostile actions’ by internal rebellious elements,” a source in Jagang Province told Radio Free Asia’s Korean Service.

“The main point of the lecture was ‘Keep your mouths shut.’”

The caution was also issued in neighbouring Yangang Province, sources revealed.

Officials told people that sarcastic expressions such as “This is all America’s fault” would constitute unacceptable criticism of the regime.

“This habit of the central authorities of blaming the wrong country when a problem’s cause obviously lies elsewhere has led citizens to mock the party,” an anonymous source said.

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Another mocking expression, “A fool who cannot see the outside world,” was also said to be circulating in the totalitarian state, referring to the country’s notoriously isolationist leader.

The phrase was apparently conceived when officials voiced shock that Mr Kim did not attend celebrations held in Russia and China to mark the end of the Second World War.

Regional media have reported an increase in public acts of dissent in the country of late. Graffiti mocking the government and its leader have appeared twice in recent weeks.

What you're not allowed to say in North Korea