The drumroll comes from Flipline Studios' Papa Louie series of browser flash games, in which players run restaurants and serve customers who then rate each order. That judging moment made the short roll instantly recognisable to players who grew up with the games, and clips of it later circulated online as a meme sound for suspenseful reveals. It is still used today because the format fits short video perfectly, turning any rating, ranking, or reaction into a small dramatic event without needing dialogue or explanation.