Onnozel manneke is a Dutch and Flemish expression that translates roughly as silly little man, and it has circulated online mainly as a short reaction clip rather than as a quotation from a widely known film or show. Because the phrase is short, instantly understood by Dutch speakers, and delivered with mock indignation, it fits the soundboard format perfectly: people save it, send it in chats, and reuse it whenever someone does something foolish. Its staying power comes from that everyday usefulness, not from a single viral moment.