Just kidding is an everyday spoken phrase, so this clip works less as a quote from one show and more as a piece of internet shorthand. Short voice clips like this spread through meme pages, reaction videos and short-form edits, where creators needed a fast way to signal that a previous line was not serious. Its brevity is part of the appeal, since it can be dropped into almost any setup without explaining the joke. That flexibility has kept it in regular use for pranks, fake announcements and playful backtracking.