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esoteric

adj : confined to and understandable by only an enlightened inner circle; "a compilation of esoteric philosophical theories" [ant: exoteric]

bullshit Audio pronunciation of "bullshit" ( P ) Pronunciation Key (blsht) Vulgar Slang
n.

1. Foolish, deceitful, or boastful language.
2. Something worthless, deceptive, or insincere.
3. Insolent talk or behavior.

oxymoron

n : conjoining contradictory terms (as in `deafening silence')

all thanks to http://dictionary.reference.com/