The line comes from Team Fortress 2, the class based shooter released by Valve in 2007, where the Demoman is the Scottish explosives expert known for his loud, taunting voice responses. Like many of his domination and frustration lines, this clip was pulled from the game files and shared on soundboards and in edited videos. It stayed popular because Team Fortress 2 voice lines are short, expressive and easy to reuse out of context, letting one annoyed reaction fit almost any bad item, bad play or disappointing result online today.