The Jockey first appeared in Left 4 Dead 2, Valve's zombie shooter released in 2009, as one of its Special Infected. Unlike the larger Hunters and Chargers, this smaller enemy climbs onto a survivor's shoulders and steers them toward danger while laughing maniacally, and its giggle became an audio cue players learned to fear. Clips of the sound spread through gameplay videos, soundboards and meme edits, where the laughter was detached from the game and reused for ambushes, pranks and chaotic moments. It endures because the laugh is recognisable and turns a sudden attack into something both threatening and funny.