curate's egg

Etymology:

• From a cartoon by the Franco-British cartoonist and author George Du Maurier captioned “True Humility” in the 9 November 1895 issue of Punch magazine, in which a bishop says to his mealtime guest, a curate, “I’m afraid you’ve got a bad egg, Mr. Jones!” The timid curate replies, “Oh no, my Lord, I assure you! Parts of it are excellent!”