The phrase is Russian for somebody said bomb, and the clip circulates on soundboards under its transliteration ktoto skazal bomba rather than an English title. Its exact recording origin is unclear, so its life online is defined by reuse in pranks, chats and short edits. It is often paired with a Russian fire alarm or an explosion sound for a bigger fake emergency, but most posts use the voice alone. The humor stays current because the warning sounds serious while the context around it is almost always harmless and staged.