Sentence:  Sonja (Diane Keaton): "That is incredibly jejune". Boris (Woody Allen): That's jejune? You have the <WSD>temerity</WSD> to say that I'm talking to you out of jejunosity? I am one of the most june people in all of the Russias!" 
Meaning of the word marked with <WSD> tags:  Effrontery; impudence.