The lobotomy sound has become shorthand online for brain-rot humour, where a clip is so chaotic or nonsensical that it feels like it has scrambled the viewer's mind. Rather than coming from one widely recognised scene, it circulates as a short meme effect shared between editors, streamers and reaction creators who reuse it as an instant signal for mental overload. Its staying power comes from that flexibility: it works on almost any absurd moment, needs no explanation, and instantly tells an audience that what they just saw was gloriously unhinged.