Sonic.exe began as an internet creepypasta that reimagined Sonic the Hedgehog as a demonic, possessed entity, and the character quickly spread through fan-made games, animations and YouTube horror videos. The laugh became shorthand for that corruption, instantly telling viewers that the familiar mascot was no longer friendly. Because the character is widely recognised in gaming and horror meme culture, creators still reuse the sound to parody scary games, build tension in short edits and add a dark twist to otherwise ordinary clips.