Short tautology clips like this circulate on soundboards and in meme edits because the phrase works without any context. The wording loops back on itself, so creators reuse it as a caption in audio form for moments that are presented as obvious, settled or beyond discussion. It has been shared as a standalone voice clip rather than as part of a longer song or scene, which helps it fit reaction videos, gaming highlights and short form edits where a brief, self contained punchline is needed instead of an explanation.
About this sound
A man delivers the deadpan line that's that and this is this in a short voice clip used for meme edits, reaction videos and matter of fact endings.
This is a short spoken clip of a man stating the circular phrase that's that and this is this with flat, matter of fact certainty. The delivery is dry and unhurried, treating a meaningless distinction as if it settles everything, and that deadpan confidence is what makes it funny. There is no music or added effect behind the voice, just the line landing cleanly and ending abruptly. Viewers hear it as a final word, the kind of logic that cannot be argued with because it explains nothing while sounding completely settled and deliberate.