d'oh

Meaning

Interjection

• Expresses frustration or anger, especially at one’s own stupidity.

Origin

• Imitative. Popularised by the cartoon character Homer Simpson in the TV show The Simpsons. Voice actor Dan Castellaneta has said that he modelled his version on the drawn-out "do-o-o-o" sound made by Jimmy Finlayson in the films of Laurel and Hardy.
• The OED has references from the BBC as far back as 1945.