Bonne nuit is the everyday French phrase for good night, used in France and other French-speaking countries as a warm farewell before sleep. Online, short clips of the phrase have become a handy soundboard staple because they are instantly recognisable even to non-French speakers, carrying a gentle, bedtime tone that translates across languages. Creators reuse it as a closing sound for streams, edits and reaction videos, where a soft foreign-language goodbye feels funnier and more affectionate than a plain English one, keeping it popular as a simple sign-off.