The phrase itself is everyday French for asking who is going to come, which makes it easy to reuse across very different videos without needing any background knowledge. Online, short spoken clips like this often travel through reaction videos, edits and social posts, where a familiar line can become shorthand for anticipation. Here, the appeal is in that open-ended question: it works for a guest, a character, a twist or a surprise, and it stays useful because the listener supplies the answer from whatever appears next.