The line comes from Team Fortress 2, Valve's team-based multiplayer shooter released in 2007, where the Heavy Weapons Guy is the slow, powerful front-line class armed with a minigun. Like many of the game's short voice responses, 'very good' was designed for quick in-game communication, but players began reusing it in videos, animations and memes because it is instantly recognisable and unmistakably positive. Its warmth and simplicity have kept it in rotation for years, especially in gaming edits, reaction clips and streams where a brief, approving sound says more than a long explanation.