The cheer comes from Five Nights at Freddy's, the 2014 indie horror game created by Scott Cawthon. It plays when the player survives a night and the clock reaches 6 AM, rewarding hours of camera checking and animatronic scares with an oddly innocent celebration. Clips of that moment circulated through gameplay videos, remixes and soundboards, and the isolated yay became shorthand for surviving something stressful. It remains popular because the contrast between cute voices and a tense horror game still works in unrelated edits.
Über diesen Sound
Yay FNAF is the kids cheering sound from Five Nights at Freddy's, used in gaming edits for jumpscares, victories and ironic celebration moments.
This is the short burst of children cheering yay that plays in Five Nights at Freddy's, lifted as a standalone reaction sound. The voices are high, excited and deliberately innocent, which makes the contrast with the game's dark animatronic horror especially funny. Lasting only a few seconds, it lands like a tiny celebration in the middle of tension. Creators use that mismatch to turn a scare, a fail or an unexpected win into a joke, with the cheerful cry arriving right after something goes wrong or finally goes right.