What did KGB mean by…
“Flops down monster, should have paid me off on that” and looks at Grammar like it was his fault
shareThe flop - first three 'family' cards from the dealer.
A monster - a almost unbeatable hand ('The Nuts' is a unbeatable hand)
Paid me off - just like it sounds, bet almost any amount with your better hand and the player holding the 'monster' will (should ) pay off.