About this "The Simpsons" episode:
The Simpsons - Gump Roast is the 17th episode of season 13 and number 286 overall in the series.
The opening scene, which shows Homer sitting on a bench holding a box of chocolates, is a reference to the movie Forrest Gump. I believe the title of the episode is connected to the same movie.
In this clip show episode, Homer is honored at a Friars' Club Roast. A number of characters show up to roast him, but the celebrating is interrupted by Kang and Kodos, who say that humanity will be judged based on Homer's experiences.