Whatdja do is the compressed, spoken form of what did you do, and the clip circulates online as a user shared reaction sound rather than a widely credited line from a named film or show. Its exact original recording is not well documented, so its life is mainly on soundboards and in short video edits. The phrase works because everyone recognises the tone from real life, the moment someone discovers damage or mischief. That familiarity keeps it reusable across gaming clips, pet videos, pranks and everyday fail compilations.
About this sound
A short voice clip saying whatdja do in a shocked tone, used as a reaction sound effect when someone messes up, breaks something or causes chaos.
This is a very short voice clip built around the slurred question whatdja do, a fast way of saying what did you do. The line lands in about one and a half seconds with no music or setup, delivered like an instant accusation after something has already gone wrong. It sounds shocked, suspicious and slightly panicked, as if the speaker has just walked in on a mess. That sudden tone is what makes it funny, turning a simple question into a punchline that tells viewers someone is in trouble before anything else is explained.