At my company, it's always a 15-minute meeting titled "quick sync". As soon as you get it, you know.
I once worked for a company that would set a box on your chair during lunch with a letter from HR in it for firings and layoffs. Being fired there was referred to as being "boxed".
Oh my. That is cold.
That's pretty much how the email I received when I was let go from a company. "Hey, do you have time to drop by my office this morning?" What would have happened had I said, "sorry, I'm really busy this morning. Can we reschedule for next week?" =)