Weng is the written form of a buzzing hum in Chinese, similar to writing bzzz in English, and repeated three times it captures a short, looping insect noise. Clips named this way are shared on soundboards as quick reaction effects rather than as excerpts from a film or song. Online, creators reuse the sound for bees, mosquitoes, flies and tiny drones, especially in short memes and chat videos where a one second buzz is enough to signal irritation, hovering or an unwanted pest nearby without needing any dialogue or music underneath it at all.