The phrase keigo tsukae literally means use honorific language, referring to the set of polite verb forms and vocabulary used in Japanese for respect, formality and social distance. As a short shared audio, it spread less as a lesson and more as a reaction, posted in messaging apps and soundboards whenever someone wants to mock-correct another person's tone. Its appeal is the contrast between everyday casual chat and sudden formality, which makes the clip useful far beyond language learning contexts.