Scout is one of the nine playable mercenaries in Valve's Team Fortress 2, released in 2007 and voiced by Nathan Velleau, and his short 'No' voice line comes from the game's built-in voice responses. Fan editors later pitched the line up and trimmed it into sub-second meme clips shared across soundboards, TikTok edits, and gaming montages. It sits comfortably next to other rapid-fire meme reactions like bruh and goofy ahh sounds, and it endures because the sped-up delivery turns a plain denial into a punchy, endlessly reusable joke.