This clip circulates online as a short reaction sound taken from a dramatic shouting scene, shared on soundboards and in meme edits where someone reacts to irreversible damage. Its wording has made it easy to search and reuse, so creators drop it into gaming fails, prank reveals and compilation videos without needing any setup. The exaggerated delivery has kept it useful long after many similar reaction clips faded, because it can signal horror, blame and comedy at the same time in under six seconds.
About this sound
A dramatic male voice shouting what have you done maniacs, used as a reaction sound effect for shocking mistakes, disasters and ruined plans online.
A man delivers the line what have you done maniacs in a loud, anguished shout that builds from disbelief into full outrage. The voice sounds strained and theatrical, as if he has just discovered something terrible that cannot be undone. There is no music or background effect competing with the delivery, so the anger and despair land immediately. It works because the reaction feels far too big for most everyday failures, turning a small mistake into a moment of total catastrophe that viewers instantly understand.