Season 6: Episode 138: Cliff's Nightmare
Cliff arrives home in the middle of the night after a long series of deliveries. He insists on eating a sausage sandwich, despite Clair's warnings that it will disagree with him and cause him to have bad dreams. He has a very bizarre nightmare that begins with Vanessa forming a jazz-funk combo and Olivia travelling back in time. He ends up back in the Navy and reporting to Theo, who chides him about his diet. Clair then becomes caught in a tornado that sucks her out of the house and leaves her hanging to the window. She calls out to Cliff for help, but he is distracted when his sandwich starts talking to him (literally disagreeing with him). A weird puppet doctor tells him that he has to make a delivery at the hospital, and brings in two monsters to drag him away. He is forced to make a delivery in front of a bunch of creatures. When the delivery does not happen, they tie him down and try to operate on him. Cliff wakes up and vows to change his diet. The food in the refrigerator starts talking and doubts that he will make good on this promise.