The K-fee scream comes from a series of K-fee coffee commercials that became widely shared online for their hidden jumpscare format in the 2000s. The adverts showed a peaceful scene before a screaming face suddenly appeared, turning them into early viral prank clips. Over time, the scream escaped the original advert and became a standalone meme sound for bait-and-switch edits, screamer references and fake relaxing videos. It still gets used because many viewers immediately recognize the setup and know what is coming.