Secret Speech

What's up with people who talk on their cell phones and hold their mouths over the phone while they talk? What are they trying to do, keep the conversation secret? If I can hear them or even read lips, will I know some amazing new fact and crush their soul at the same time? I refuse to believe that these people are talking about information that is so sensitive that they don't want other people to know what they are saying. Maybe it could be that they want to smell their own breath while they talk. "Hi hun, I wanted to call so that I could smell my own breath while on the phone to you. If you're wondering, I smell like cheese."
This is the opposite of people who are too loud on their phones in very public places. Either way, the person who covers their mouth and the person who speaks too loudly in public are total douche bags. They should be locked in a room with the asshole who talks on his ear piece and looks like he has tourettes. Then give them all only 1 bar of reception. The mouth coverer's game is up, the loud talker talks louder and loses his voice and the tourettes guy looks like a bigger idiot because he is now talking even louder to himself.