Teemo is a Yordle champion from League of Legends, and this clip is taken from Instalok's 'Yordles' track, which celebrates the game's small, furry champions in song. The line works because it sounds like classic Teemo: cheerful on the surface, but gleefully aware that his traps and poison darts hurt. League players and meme editors picked it up as a ready-made taunt for montages, fails, and reaction clips where one line could do the mocking. It endures because it is short, instantly recognisable, and perfectly timed for any moment when someone has just been outplayed.