Homer Simpson: "D'oh!"
Homer is well known as one of the world’s most famous friends of donuts. He has coined sayings like “Mmmm… donuts” and “Donuts. Is there anything they can’t do?”. But on the other hand Homer has also been heard to say “Operator! Give me the number for 911!”.“D’oh!” is one of Homer’s favorite expressions. It doesn’t mean, as many believe, dough or donuts. “D’oh” was originally an expression used in the Laurel and Hardy movies. But it was Homer who made it famous.
Nowadays, the term is an official word around the world. Among others it’s included in Webster’s and in Oxford’s English dictionary where it’s defined as ‘expressing frustration at the realization that things have turned out badly or not as planned, or that one has just said or done something foolish. Also: implying that another person has said or done something foolish’.