The 'Get Ready, Everybody. He’s About To Do Something Stupid' meme originates from the 2007 film 'The Simpsons Movie.' In the scene, Lenny Leonard observes Homer Simpson attempting a dangerous stunt on his roof, prompting him to alert the onlookers to the impending disaster. The template gained viral status as a perfect reaction image for highlighting moments where someone is clearly about to make a poor choice or a predictable mistake. It is widely used across social media to poke fun at corporate blunders, political gaffes, or the everyday antics of friends who never seem to learn from their past errors.