Place this clip at the very start of a horror edit to set up the payoff, then follow it with the FNAF Jumpscare Scream once the scene cuts, or swap that second hit for a reaction sound if you want a comedic turn instead.
About this sound
This clip is a short phone call intro from the nightly calls, lasting just under four seconds with that familiar in-game phone tone. It feels tense and uneasy, like lore is about to be explained in a cramped security office. It comes from Five Nights at Freddy's 1, the 2014 survival horror game that started the series.