Annoying

Why do people feel the need to talk while one person is standing right in front of your desk and the other is standing right behind your chair? It sure makes it awkward for the person in the middle. What do you do? Listen and look back and forth? Stare at your blank computer screen like you are contemplating on the background? Or get up and walk away? I mean it's just weird. That just happened to me for a full 4 minutes. I know because I was watching the clock and thinking, "please just step one foot to the side so I am not positioned in between ya'll and the situation would be solved. Alas, they did not step to the side.