The line comes from Atop the Fourth Wall, the long-running web series in which reviewer Linkara critiques comic books panel by panel. Whenever a comic leans on dubious comic-book science, he breaks character to deliver this theatrically exasperated retort, and the moment became a recurring catchphrase. Fans clipped the delivery and passed it around forums and video edits, where it outgrew its comic-review roots. Today it circulates as a standalone reaction sound, used whenever someone states the obvious with total confidence or asks a question science answered long ago.