Have you seen a deck of cards? There are 4 Kings in it - the spade, the heart, the diamonds and the club. King means supreme. There can only be one King. If there are 4 Kings, there will be a struggle among them to be THE King. Alternatively, the spade, the diamond, the club and the hearts must agree among them who shall be THE King.
But a deck of cards have 4 Kings. And we know none have agreed who should rule supreme. If it is a game of poker, the one who wins is the one who calls the best bluff.
But what if it is not a bluff and the cards are all on the table? You can see it but your mind insists it is a bluff.
Hence the phrase....fall like a deck of cards.
Is it too late to put the cards back into the box?
Only if you are willing.