The phrase is Polish slang for asking what someone is doing, and in this clip the final syllable is deliberately stretched to sound more dramatic and sarcastic. Online, that kind of elongated delivery has become a familiar shorthand in Polish meme culture for calling out nonsense, which is why the sound works well even outside Poland as a universal reaction to chaos. Short, punchy reaction clips like this travel easily between short video apps and group chats, where creators reuse them to punctuate fails, pranks and unexpected twists without needing a translation.