Is there anything more frustrating than someone who interrupts you while you're speaking? Or keeps talking during a meeting even though you're trying to present something? Sometimes you just want to scream at them and ask what the heck their problem is.
I remember in my final year of high school, I was presenting in English class when two kids wouldn't stop talking. I stopped my entire presentation, looked at them, and said "If you haven't noticed, I'm speaking. You can stop your conversation at any time now." Needless to say, they remained silent.
It turns out celebrities are just as annoyed with this bad habit as we are! Morgan Freeman was presented with the Lifetime Achievement Award at the Screen Actors Guild awards, and during his speech he noticed a chatterbox in the front row.
To say he was annoyed is an understatement.