LOL has been shorthand for laughing out loud in online writing since the early days of chat rooms and forums, and this clip turns that shorthand into an actual sound. Instead of a long laugh track, creators use the brief he he vocalisation as a readable reaction that works even with the volume low in a feed. It spread through meme edits, gaming videos and group chats where a fast, dry response is funnier than a big performance, and it remains useful because almost everyone recognises the intent instantly.