Place it as the closing beat after a failed attempt, following the It Was At This Moment He Knew button to set up the fall, then let the Fail Sound Meme button underline the result in the next cut.
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This is a very short clip of GLaDOS, the calm robotic voice from Portal, saying one clipped word in under a second. Her flat, measured delivery makes the single word feel dry, cutting and faintly menacing, like a polite machine passing judgement. It comes from the Portal games, where her deadpan lines turn ordinary words into something unsettling.