C'est la cantine circulates online as a short TikTok sound, where its French phrase for the school canteen has become a handy shorthand for lunch content. Rather than belonging to a single well-documented film, song or viral creator, it is shared and reused across short videos about school life, cafeteria food and everyday meals. That flexibility is part of its appeal: the phrase is short, instantly recognisable in context and easy to drop into a cut. It remains in use because lunch scenes are endlessly relatable, and the clip gives them a quick, playful cue.