The phrase de koer is Dutch for the courtyard, which explains the open air echo and schoolyard feel that gives this clip its character online. The sound circulates on meme soundboards simply under the full name Steffen Wauters De Koer, shared as a ready to use shoutout rather than as part of a known film or show. Its appeal is the specificity of a full name being summoned so seriously, making it reusable for any Steffen, any late arrival, or any moment that needs a loud public announcement.