ZANY, n.
A popular character in old Italian plays, who imitated with ludicrous incompetence the _buffone_, or clown, and was therefore the ape of an ape; for the clown himself imitated the serious characters of the play. The zany was progenitor to the specialist in humor, as we to-day have the unhappiness to know him. In the zany we see an example of creation; in the humorist, of transmission. Another excellent specimen of the modern zany is the curate, who apes the rector, who apes the bishop, who apes the archbishop, who apes the devil.
--Ambrose Bierce - The Devil's Dictionary