You’re about to buy a property when the owners and the real estate agent arrive. You pull the cheque out of your pocket and the agent says happily, “Ah, that’ll be the cheque mate!”
You immediately burst into tears and hysterically strangle the estate agent. When things have calmed down the owners walk over to you and say, “No worries about the estate agent, no great loss to humanity there, f&#king agents. But you must be a shockingly bad chess player!”
You move your king next to your opponent's king and say "check".