Overview
"Lucky Penny" is the 15th episode in the second season of the television series How I Met Your Mother and 37th overall. It originally aired on February 12, 2007.
Plot
Ted and Robin are running through the airport, trying to catch a plane to Chicago, where Ted has an job interview with a large architecture firm for the job of running the company's New York branch. As they reach their gate, the flight attendant tells them they cannot get on the flight. They explain that Ted had to attend a court date that morning for jumping a subway turnstile, and she asks them to wait while she talks with the flight. While they wait, Robin suggests that their lateness was Barney's fault.
The show then flashbacks a few months to when Marshall had just broken his toe, disappointing him as he had been training hard to run the New York City Marathon. Barney complained about his moaning, stating that running a marathon is easy, even without training. Marshall then bet Barney he could not complete the marathon, but to the group's surprise, Barney completed the marathon quite easily, showing no signs of being tired. Upon being informed that marathon runners could ride the subway free that day, Barney decided to ride the subway and show off the medal he was given for finishing the marathon. Later, Barney found himself suddenly unable to move his legs, forcing him to ride the subway end-to-end and call Ted to come and help him. In his rush, Ted failed to pay to use the subway, jumped the turnstile, but got tackled by a cop before he could help Barney.
From Wikipedia (CC BY-SA 4.0).