The Killing Spree callout was popularised by Unreal Tournament in 1999, where an announcer rewarded players for five kills without dying alongside ranks like Rampage and Dominating. The system was widely copied by later shooters and MOBAs, including Dota and League of Legends style announcements, and the lines became shared gaming shorthand. This female version circulates on soundboards and in edits because the phrase is instantly understood even without gameplay context, making it a quick, familiar way to mark any run of success online.