Angry Birds is the hit slingshot game launched by Rovio in 2009, starring Red, the round red bird who leads the flock against the egg-stealing pigs. Each bird has its own set of chirps, launch cries and pain sounds, and this clip is one of Red's hurt reactions, the kind of grunt heard when a bird smacks into wood, stone or a grinning pig. As the game exploded into one of the most downloaded mobile titles ever, its sounds spread across memes, ringtones and soundboards, where Red's dramatic little yelps still get used as comic reactions today.