Q: You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
Category: FAMOUS EXPRESSIONS 
Clue: This cliche about superfluousness is derived from criticism of a 2nd coronation in Shakespeare's "King John"
A:
gilding the lily