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