Safest stock in the world?

Let's play a game: what is the safest stock in the world?

I mean, if the world was to collapse, undergo a prolonged period of depression, if the US dollar was to lose its' hegemony, or any other depressing event that you might think of.

Which stock/company do you think will survive these hard times, and you are ready to hold it for the rest of your life?

Some rules:
1. No ETFs, only individual stocks.
2. You can choose several stocks.
3. You can pick a stock from whatever country you want.
4. Explain your choice.

Let the game begin!