This sound refers to the jumpscare audio style associated with Five Nights at Freddy's, the indie horror game series that became widely popular in the 2010s. FNaF clips spread heavily through YouTube compilations, reaction videos and meme edits because the series is built around sudden animatronic reveals. The sound remains popular online because it communicates instant panic in less than two seconds, making it useful for horror jokes, fake-outs and exaggerated reaction posts. It is often grouped with other loud meme staples such as a scream meme.