AGNOSTIC, n. 1. An atheist who craves social acceptance; 2) A person who feels superior to atheists by merit of his ignorance of the rules of logic and evidence.
(Adding weight to the second definition, Pew Research Center just released a poll showing that agnostics were two-and-a-half times more likely than atheists to hold at least one irrational new age belief [“new age” being pronounced as a single word starting with “s” according to Penn & Teller] — in spiritual energy; psychics; reincarnation; and/or astrology. Agnostics were only slightly less credulous in this regard than Christians.)
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— from The American Heretic’s Dictionary (revised & expanded), the 21st-century successor to Ambrose Bierce’s Devil’s Dictionary. (The link goes to 50 sample definitions and illustrations.)