This clip comes from Five Nights at the Agk Studio 5: The Final Chapter, a fan-made horror game in the style of the Five Nights at Freddy's series, where Mallie provides one of its sudden jumpscare moments. Short screamer clips like this spread through soundboards and horror-game videos because they are easy to drop into edits without needing the full game scene. Like a classic FNAF jumpscare scream, it works as instant shorthand for being caught, which is why fans of the series keep reusing it in memes, compilations and reaction clips years after the game faded from the spotlight.