Portal:Fallout: New Vegas
According to J.E. Sawyer, the trait was added as a compromise because different members of the team often suggested 'wacky' content that others thought would be out of place.
The game takes place in 2281, four years after the events of Fallout 3, and thirty-nine years after Fallout 2. The Courier, the player's character, is meant to deliver a package from Primm to New Vegas. However, the Courier is intercepted by the Great Khans and Benny, who leave the Courier for dead in a shallow grave.