The phrase spread online as a short reaction audio, with 'blud' giving it a distinctly British internet slang flavour and Diddy providing the recognisable public figure at the centre of the joke. Loud versions became popular because the extra volume makes the disbelief feel more theatrical in short-form edits, where a sound needs to register immediately. It is now mainly used as a commentary clip rather than a quotation from a film or show, dropped over moments that look absurd, suspicious or hard to explain.
About this sound
A loud, exaggerated reaction clip asking what Diddy is doing, used in memes and short video edits to mock a confusing or outrageous moment on screen.
The clip is a loud, drawn-out spoken reaction in which a voice demands to know what Diddy is doing, delivered with rising disbelief and an almost shouting energy that makes the question land as a joke in itself. The emphasis falls on the slang address and the final word, turning a simple question into a burst of confusion, mockery and exaggerated alarm. Played over a strange or unexpected moment, it instantly tells the viewer that something does not add up, and its sheer volume gives edits a punch that a quieter line would lose.