The sound comes from PewDiePie, whose And that's a fact delivery became a classroom meme for jokingly stamping an obvious statement as proven. Shared widely as a short button sound, it spread through reaction videos and student humour because it needs no setup: hear the line and the joke is already understood. It is still used today for the same reason, as a quick sarcastic closer that works alongside other punchline sounds like a correct ding or a badum tss after a statement lands.
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PewDiePie's And That's a Fact meme sound effect, played after an obvious statement to add a sarcastic punchline in classroom jokes and reaction clips.
The clip is a short spoken punchline in which PewDiePie delivers the line And that's a fact in a confident, slightly smug tone, as if closing an argument that needs no further proof. It is brief and punchy, with a clear emphasis on the final word that makes it feel like a mic drop. Played right after an obvious or exaggerated statement, it turns a simple fact into a joke, giving the speaker instant fake authority. Viewers recognise the delivery immediately, which is why it lands as a knowing wink rather than a serious claim, especially in classroom humour and reaction-style edits.