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The exact origin of this short voice line is not widely documented, so it circulates mainly as a standalone meme clip shared on soundboards and in short edits. Its popularity comes from how reusable the command is, turning any flat joke or uncomfortable pause into a joke about forced laughter. Creators pair it with reaction faces, deadpan stares and other meme sounds, and it sits naturally alongside clips such as the baby laughing meme in compilations built around fake or exaggerated laughter.
About this sound
But Now You Must Laugh is a short voice clip of a stern command to laugh, used as a meme sound effect for forced laughter and awkward comedy moments.
The clip is a brief, deadpan male voice delivering the line but now you must laugh with mock serious authority. It lasts just over two seconds, with a flat, commanding tone that makes the demand feel both absurd and oddly threatening. There is no music or background noise, just the clear spoken phrase landing as a punchline on its own. Viewers hear it as an instruction they did not ask for, which creates the comedy. The contrast between the serious delivery and the silly request makes ordinary moments feel like a staged, forced laugh track.
