"I'm Too Sexy" or "Summer in the City"? (3,3)

I believe the answer is:

hot air

(Other definitions for hot air that I've seen before include "Gas" , "Empty bombast often found in balloon" , "Bombastic talk or balloon elevator" , "Empty boastful talk; balloon lift provider" , "Talking nonsense" .)

I've seen this clue in the LA Times.

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