Teemo is a yordle champion in League of Legends, Riot Games' multiplayer online battle arena released in 2009, where he plays as the Swift Scout who plants invisible mushrooms as traps. His playful voice lines and giggle have made him one of the game's most recognisable characters, loved and teased in equal measure by the community. The laugh circulates widely in League memes, Twitch clips and YouTube edits, where creators use it as shorthand for sneaky behaviour and light trolling. Its staying power comes from the character's reputation: everyone knows the giggle means trouble is brewing.