Sirrah, you were best take my coxcomb.

– William Shakespeare

King Lear, Act 1, Scene 4. The Fool says this to Lear, as he tries to get his master to see the error of his ways in giving him kingdom away to his daughters. He suggests that the King wear his coxcomb (hat worn by a professional fool). This is foreshadowing that Lear will eventually lose his mind and become the fool.