The phrase 'so what?' has long been used in everyday speech as a blunt way to dismiss a point, and short clips of it have circulated widely as reaction sounds on social media and soundboards. Creators use the line when a character or commenter tries to make something sound serious and the reply needs to undercut it instantly. Because the wording is so familiar, viewers understand the joke without extra context. Its staying power comes from that simplicity: it works in memes, gaming clips, and everyday reaction videos whenever indifference is funnier than an argument.