You win the Castle or the Doghouse

The game was on, the players watched
At poker they all starred
The dealer shuffled, then dealt out each card
The players holding hands up and concentrated hard
Mr Black discarded 1, picked up to make his hand
Mr Green threw 3 out, given cards he carefully scanned
Mr Blue discarded 2 when given cards closed and then re-fanned
Mrs Red discarded 2 just like Mr Blue
They started bidding, and around they went
It was scary some were bidding, the amounts that they spent
Mr Black went all in, the cards turned, and with fortune he would win