Parlons français simply means let's speak French in French, and the phrase has long been used by teachers to signal the start of a lesson conducted entirely in the language. Online, the short spoken version became a reusable soundboard clip because it is instantly understood even by beginners. It circulates in language learning edits, school memes and French culture jokes, where a single phrase can set up the whole premise without extra explanation. Its popularity comes from that clarity and from the contrast between a formal lesson cue and a silly context.