Background: A GM and several players, many of which own their own homes, one of which had some work done on their house recently.

DM: “So what’s your AC?”

Player: “30,000.”

DM: “Your armor class is what?!”

Player: “BTU? OH! 19.”

DM: “That’s better.”

Player: “Not in the summer.”

(For note: BTU is a measure of how effective an air conditioner unit is… )