The 'Updated Autopsy Report' meme originates from the popular visual novel series Phoenix Wright: Ace Attorney, specifically used by the rival prosecutor Miles Edgeworth. In the game, Edgeworth frequently presents a revised autopsy report just as the protagonist, Phoenix Wright, manages to find a contradiction, effectively nullifying Phoenix's progress. This mechanic became a symbol of frustration for players and eventually evolved into an internet meme used to describe 'moving the goalposts' or introducing a convenient, last-minute piece of evidence to win a debate. It perfectly captures the feeling of someone changing the rules of an argument mid-way through just to maintain their upper hand.