On Sunday morning when the three wake up for coffee, Jack pours himself a cup of coffee and we can see that the pot is full. Janet comes into the kitchen and about a minute later she pours herself coffee and there is only about 1 cup of coffee left in the pot. She sits down. In a few minutes Chrissy walks in saying, "Is there any more coffee left?" and there is a bit left she brings it to the table and on the next shot we see that the pot is full to the top, and she pours everyone coffee. They really should have caught that one.