Doh became Homer Simpson's catchphrase in The Simpsons, the animated series created by Matt Groening that premiered in 1989 with Dan Castellaneta voicing Homer. Written in scripts as annoyed grunt, the line grew into one of television's most quoted reactions and was added to the Oxford English Dictionary in 2001. Clips and soundboards spread it far beyond the show during the meme era, where its short length made it ideal for reaction videos, edits and chats whenever a failure needed a familiar voice.