1
general::
Phrase(s): a snow job
a systematic deception; a deceptive story that tries to hide the truth. • You can generally tell when a student is trying to do a snow job. • This snow job you call an explanation just won’t do.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
An effort to deceive, persuade, or overwhelm with insincere talk. For example, Peter tried to give the officer a snow job about an emergency at the hospital but he got a speeding ticket all the same. This slangy expression, originating in the military during World War II, presumably alludes to the idiom SNOW UNDER.
American Heritage Idioms