D'oh!
"D'oh!" () is a catchphrase used by the fictional character Homer Simpson, from the television series "The Simpsons," an animated sitcom (1989–present). It is an exclamation typically used after Homer injures himself, realizes that he has done something stupid, or when something bad has happened or is about to happen to him. All his prominent blood relations—son Bart, daughters Lisa and Maggie, his father, his mother and half-brother—have also been heard to use it themselves in similar circumstances. On a few occasions, Homer's wife Marge and characters outside the family such as Mr. Burns and Sideshow Bob have also used this phrase.

In 2006, "d'oh!" was listed as number six on TV Land's list of the 100 greatest television catchphrases. The spoken word "d'oh" is a sound trademark of 20th Century Fox. Since 2001, the word "doh" has appeared in the "Oxford English Dictionary", without the apostrophe. Early recorded usages of the sound "d'oh" are in numerous episodes of the BBC Radio series "It's That Man Again" between 1945 and 1949, but the "OxfordWords" blog notes "Homer was responsible for popularizing it as an exclamation of frustration." The term also appeared in an early issue of "Mad" comics, with a different spelling but the same meaning, in issue 8 (December 1953 – January 1954); in a one-page story by Harvey Kurtzman entitled "Hey Look!", a man seeking peace and quiet suddenly hears a loud radio and, grimacing, says, "D-oooh – the neighbors radio!!"
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D'oh!
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