The phrase is associated with Jeder gegen Jeden, a German television quiz show, where In Nürnberg is heard as a short location announcement for Nuremberg. Short location announcements like this became popular on soundboards because they can be dropped anywhere without setup. German formal phrases have a small niche online, similar to Zu Nebenrisiken und Wirkungen, where the serious delivery itself is the joke. The clip stays in use because it is instant, recognisable to German viewers, and funny out of context for everyone else.