The party van joke grew out of 4chan culture, where users joked that an unmarked van would arrive for anyone posting something questionable, a gag that later spread through gaming clips and TF2 communities. It works as shorthand for getting caught, much like the FBI open up meme, because viewers instantly recognise the threat of a sudden raid without any explanation. Because the joke relies on shared internet knowledge rather than a single film, show or recording, it has stayed flexible, moving from forum threads to short videos, streams and reaction edits.