Obaminable: Declaring as right what is undeniably wrong; post-modern bully pulpit.
Obstropulous: Seeming to be helpful while really making things more difficult.
Ohnosecond: That minuscule fraction of time in which you realize that you've just made a big mistake, like accidentally sending a personal e-mail to everyone in the office.
Olibarky: Cranky, patronizing, and oh-so-pious sermonizing from the modern politically-correct elite.
OMG-iddy: Effusive enthusing on social networking sites.
Omnimoral: The modern moralistic indifference to morality; Episcopalian ethics.
Onomatimusic: Music that actually is as bad as it sounds (with a tip of the hat to Wagner).
Oranter: The blurring of the distinction between oratory and a temper tantrum; a cable TV talk show host.
Oreosis: Eating the icing center of an Oreo before eating the cookie outside.
Osteopornosis: A disease of degeneracy.
Ozombied: Inhaling the rarefied air of the environmentalist ideologue.