Minecraft is Mojang's block-building sandbox game, and cows have been one of its farm animals since its early versions, giving players milk, leather and beef. Their hurt sound comes from that early animal audio set, which many longtime players remember more fondly than the newer recordings. As short clips from the game spread on video platforms and soundboards, this brief moo became a handy shorthand for an innocent creature taking a hit. It endures because it is instantly recognisable, funny without context, and easy to drop into gameplay edits and memes.