Homer's main and most famous catchphrase, the annoyed grunt "D'oh!", is typically uttered when he injures himself, realizes that he has done something stupid, or when something bad has happened or is about to happen to him. During the voice recording session for a Tracey Ullman Show short, Homer was required to utter what was written in the script as an "annoyed grunt". Dan Castellaneta rendered it as a drawn out "d'ooooooh". This was inspired by Jimmy Finlayson, the mustachioed Scottish actor who appeared in 33 Laurel and Hardy films. Finlayson had used the term as a minced oath to stand in for the word "Damn!" Matt Groening felt that it would better suit the timing of animation if it were spoken faster. Castellaneta then shortened it to a quickly uttered "D'oh!" The first intentional use of D'oh! occurred in the Ullman short "The Krusty the Clown Show" (1989), and its first usage in the series was in the series premiere, "Simpsons Roasting on an Open Fire".
Homer's main and most famous !catchphrase, the annoyed grunt "D'oh!", is typically uttered when he injures himself, realizes that he has done something stupid, or when something bad has happened or is about to happen to him. During the voice recording session for a Tracey Ullman Show short, Homer was required to utter what was written in the script as an "annoyed grunt". Dan Castellaneta rendered it as a drawn out "d'ooooooh". This was inspired by Jimmy Finlayson, the mustachioed Scottish actor who appeared in 33 Laurel and Hardy films. Finlayson had used the term as a minced oath to stand in for the word "Damn" Matt Groening felt that it would better suit the timing of animation if it were spoken faster. Castellaneta then shortened it to a quickly uttered "D'oh!" The first intentional use of D'oh! occurred in the Ullman short "The Krusty the Clown Show" (1989), and its first usage in the series was in the series premiere, "Simpsons Roasting on an Open Fire".