A countdown, everyone has one. It's right there for everyone else to see only the person who it's for can't see it. It's to their death, they know everyone elses countdown but not theirs, it torments them every moment of their life.
The numbers are right there above their head, even when you look in a mirror you can't see it. It's tormenting because when it reaches zero you never know how you'll die? Everyone wants to know how and how much time is left for them but no one does.
We always make sure to act nice when the number get closer to the end, I mean they'll kick the bucket; you don't want to be remembered as the one who said "Go to hell" right before someone died, do you?
The numbers are everywhere, everyone has one; until they don't. Just savour the time you have left before it gets to the end of the countdown.