Place it at the end of a failed attempt, after the mistake is clear, so it works as the final line. Pair it with No God Please No just before it for panic, then follow it with Nope to shut the conversation down.
About this sound
A short two-second voice line from GLaDOS, Portal's dry, robotic artificial intelligence, asking where your life went so wrong in her slow, mocking tone. It lands as cold, sarcastic and faintly menacing, turning a simple question into a judgement on every bad choice that led here. The line comes from the Portal games, where she taunts the player throughout the test chambers.