En français simply means in French, and this clip is used online as a compact language gag rather than as a quotation from a known film, show or song. Short meme sounds like this spread through soundboards, reaction videos and social edits, where a single phrase can signal a change of language without needing a longer explanation. Its appeal comes from that instant recognition: even viewers who do not speak French understand that something has switched. That simplicity keeps it useful for classroom jokes, travel clips and bilingual comedy, long after any single trend has passed.