The phrase comes from the Spanish radio commands in Counter-Strike: Global Offensive, Valve's tactical shooter first released in 2012. In matches, radio callouts give fast information without open voice chat, and this line reports that the enemy sniper position is clear, much like enemy spotted and bomb has been planted do for other events. Clips later circulated on soundboards and in Spanish speaking gaming communities, where players reuse it outside the game as a meme confirmation for any long range elimination in other shooters.