The sound comes from a series of television adverts made in 2004 for the German energy drink K-fee. Each advert showed a calm, ordinary scene, such as a car on a country road, before cutting to a close-up screaming face with a loud shriek. The clips spread quickly through email forwards, forums and early video sites, and the same face and scream were later reused in the Scary Maze Game. That history turned the clip into a staple scream meme that still appears in pranks today.