Overview
"YOLO" is the fourth episode of the twenty-fifth season of the American animated television series The Simpsons and the 534th episode of the series. It originally aired on the Fox network in the United States on November 10, 2013. The episode was written by Michael Nobori and directed by Mike Frank Polcino.
In the episode, Marge invites an old pen pal to stay with Homer and cross items off his "to-do" list from when he was 10 years old, so that Homer can embrace his "You-Only-Live-Once" spirit. Meanwhile, Lisa starts an honor code for the school to combat cheating.
Plot
Kirk Van Houten is going through a poorly-concealed midlife crisis and Homer is left in his own depression when Marge inadvertently ruins his mood by cheerfully telling him he will have the same job, family and experiences until he dies. Homer then shows Marge letters from his old Spanish pen pal, Eduardo, whom the young Homer wrote to for a school project because foreign pen pals required fewer letters from him than area prisoners. To cheer up Homer, Marge invites Eduardo to stay with the family. Eduardo arrives and helps Homer fulfill his childhood dreams, such as riding in the back of a fire truck, fighting The Pirates of Penzance, and re-enacting the battle of Captain Kirk and the Gorn from Star Trek using props from Comic Book Guy's store.
Homer decides to fulfill his last childhood dream: flying like Rocky the Flying Squirrel. Homer and Eduardo fly on a wingsuit and, after panicking, Homer is able to control his flying. Unfortunately, Homer crashes on the tallest building in Springfield and falls to the ground.
From Wikipedia (CC BY-SA 4.0).