Pentakill comes from League of Legends, where it describes one player eliminating all five opposing champions in quick succession during a match. Because the feat is rare and difficult, it has become a shorthand for a perfect team fight and a highlight worth replaying. The term and its accompanying sounds spread through gameplay clips, montages, and soundboards, where players reuse them to celebrate their own streaks. It remains popular because it instantly communicates dominance without needing any explanation to a gaming audience.