snow job

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun An effort to deceive, overwhelm, or persuade with insincere talk, especially flattery.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun idiomatic An attempt to persuade a person using flattery or deception.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a long and elaborate misrepresentation