Eh, who cares has become a staple dismissive catchphrase online, used as a short audio reaction whenever someone wants to signal indifference without starting an argument. Its appeal lies in its brevity and tone: in just over a second it can close down a debate, brush aside criticism, or turn a minor embarrassment into a joke. Creators reuse it across memes, reaction videos, and short-form edits because the line is instantly recognisable even without context, and its casual apathy fits almost any low-stakes situation.