I know what it means now.
Because it just happened to me.
It's like being hit on the head with a feather and being knocked out into being awake.
And it means that I don't have to be upset. Because there's no reason to be.
I'm going in, because now, I understand what in really is.
With plenty of thanks to my good friends.
If this makes no sense to you, it's okay. It doesn't have to make sense to me either.