Guess he could no longer keep a straight face!
Actually, it was Carney's ego that could no longer stand the incredulous and sarcastic looks of disdain, not to mention the snickering, of an increasing number of "journalists" in the audience.
For any non-sociopath, the tipping point had been reached long ago, weeks, if not days, after BHO first took office.
Contorted from tryng to see the end of his nose check if it was growing.