Of little value; an unwanted expression of opinion. Why “two cents” should signify little value when one cent would be worth even less is not known. But two was long ago selected in Britain (for two-pennyworth, or tuppence). “I care not twopence” is in Beaumont and Fletcher’s The Coxcomb (1610). And two bits (for twenty-five cents) or two cents was used in America during the nineteenth century. As for putting in one’s two cents, meaning to insert one’s own view, it dates from the late nineteenth century.