What is Blowing Smoke Up My Ass?
1.
Giving a gratuitous and insincere compliment, possibly to deceive. (Can be my, your, his, or her ass, but probably not plural, as in their asses.)
Yeah, sure. Thanks for the kind words, but I think you're blowing smoke up my ass.
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2.
Most literally translating to "trying to get a reaction" out of somebody. Originated from a 16th century technique to determine death by literally blowing tobacco smoke into someone's anus (through a long pipe) - where a reaction indicated that the person was still alive.
Guy 1: Hey man, I think someone just stole your car!
Guy 2: Are you blowing smoke up my ass?
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