This legendary Simpsons GIF is from the Season 8 episode 'Bart After Dark,' which first aired on November 24, 1996. In the episode, Bart is secretly working as a doorman at a local burlesque house. When his grandfather, Abraham Simpson, walks in to visit, he immediately sees Bart, turns around on his heel without a word, and walks right back out, having forgotten his hat in his haste. The GIF became an internet staple in the late 2000s for its perfect portrayal of 'instant regret' or the decision to immediately leave a situation after seeing something you don't like or weren't supposed to see. It is the go-to response for 'Nope-ing' out of a toxic thread, an awkward social event, or a project that is clearly doomed from the start. Its brilliance lies in the seamless, fluid motion of his immediate turnaround, symbolizing the ultimate rejection of a current environment.