もともとは丸い塊状の物体や塊状のパンを意味し、現在理解されているケーキではない。cookとの同族語源は否定されている。
What man, I trow ye raue, Wolde ye bothe eate your cake and haue your cake? ["The Proverbs & Epigrams of John Heywood," 1562]Originally (until early 15c.) "a flat, round loaf of bread." Piece of cake "something easy" is from 1936. The let them eat cake story is found in Rousseau's "Confessions," in reference to an incident c. 1740, long before Marie Antoinette, though it has been associated with her since c. 1870; it apparently was a chestnut in the French royal family that had been told of other princesses and queens before her.