The clip comes from 5 AM at Freddy's: The Sequel, a Five Nights at Freddy's parody animation by the YouTube animator Piemations, where the line appears around the 2:01 mark. In the scene a character reacts to knee pain with a panicked yell that fans clipped and shared on its own. The short shout separated easily from the animation and became a reusable soundboard reaction for falls, leg hits and exaggerated injuries, keeping the joke understandable even without the original FNAF context.