XD and lol grew out of early internet chat shorthand, where XD stood for a laughing face with squeezed-shut eyes and lol meant laughing out loud, and both became universal markers for finding something funny online. This clip packages that shorthand as audio, turning a text reaction into a loud, shareable laugh for TikTok-style short videos. It has no single credited speaker or original show behind it, and its appeal comes from instant recognition: viewers already know the joke before the laugh finishes, which is why it keeps circulating in reaction edits, fail compilations and playful roast clips.