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No single film, show or viral video is reliably credited as the source of this short phrase, so it circulates online mainly as a standalone reaction clip rather than as a quote tied to one scene. Its appeal is the wording itself: short, direct and easy to drop into almost any argument, which is why it appears in meme edits, reaction videos and soundboards alongside other blunt callout lines. With only a couple of seconds of audio, it is simple to reuse, instantly understood without context, and still effective when a creator wants to dismiss something without explaining why.
About this sound
A spoken clip of someone saying you know what's bullshit in a blunt, annoyed tone, used as a reaction for calling out something fake or overhyped in memes.
This is a two-second spoken reaction clip built around a single blunt line, delivered in a flat, fed-up voice that lands like a punchline rather than a rant. The speaker starts conversationally, then leans into the final word with a sharp drop in tone, giving editors a clean cut point and an instant attitude shift. It works because it sounds like a real person losing patience, not a performed joke, so it makes a questionable claim, a staged moment or an obvious exaggeration feel instantly called out. Played over a pause or a reveal, it turns mild disbelief into a direct, funny verdict for the viewer.
