Andy Bernard's nickname for Jim Halpert is Big Tuna.
Andy's Unique Nickname for Jim Halpert
In the popular NBC sitcom The Office, Andy Bernard, a character introduced in season 3 and portrayed by Ed Helms, developed a habit of assigning nicknames to his colleagues. For Jim Halpert, played by John Krasinski for the entire duration of the series, Andy's chosen moniker was Big Tuna.
This distinctive nickname became a recurring element throughout their interactions at Dunder Mifflin. It was known among fans as one of Andy's memorable quirks, often used for an amusing reason that highlighted Andy's unique personality and his perception of others. The "Big Tuna" nickname added a layer of comedic dynamic between the two characters, reflecting Andy's often eccentric and sometimes overbearing demeanor.