Office Rapture

This is when you are on the phone having a personal conversation at work when all of the sudden, the office gets so quiet that you think you've been "left behind". The reality is that your coworkers are in the office, sitting quietly at their desks, listening to your conversation.

"Hey, let me call you back. I thought an Office Rapture occurred but I think everyone just heard me tell you that I think my boss is a bitch."