D'oh is the catchphrase of Homer Simpson, the father in the animated sitcom The Simpsons, voiced by Dan Castellaneta since the series began in 1989. Homer uses it whenever he injures himself, forgets something, or realizes a plan has gone wrong. The expression became so widely recognized that it entered major dictionaries in the early 2000s. Clips and remixes spread it far beyond television into a staple meme for everyday blunders, keeping the sound in constant use for reactions to minor disasters and self-inflicted mistakes.