eat one's cake and have it, too
Also, have one's cake and eat it, too. Have a dual benefit, consume something and still possess it, as in Doug was engaged to Ann and still dating Jane; he was trying to eat his cake and have it, too. This metaphoric expression is often put negatively, as it already was in John Heywood's proverb collection of 1546: “You cannot eat your cake and have your cake.”
Words nearby eat one's cake and have it, too
eat crow,
eat high off the hog,
eat humble pie,
eat in,
eat like a bird,
eat one's cake and have it, too,
eat one's hat,
eat one's heart out,
eat one's words,
eat out,
eat out of someone's hand