 There s a chill in the air, even in the bar where there s a blockage in the furnace vent. The furnace repairman is delayed in his visit, so in the meantime, the collective in the bar suggests that the skinniest person try and shimmy down the furnace vent to unblock the clog, that person being Diane. Diane gets stuck in the vent, which is located underneath the floor, but that doesn t stop her from dispensing her wisdom to the gang as the bodiless voice. The chill is also affecting Cliff, who is under the weather, even so much so that he s come into the bar during the middle of his route to get something hot to drink. He s obviously sick, but won t let that affect him finishing his route. Actually he used all his sick days to take his trip to Florida. Norm, being the friend that he is, tells Cliff that the remaining handful of letters he can deliver for Cliff. Although initially reluctant to let Norm do this for him if only because of what he sees as Norm s lack of postal delivery skill, Cliff does let him do it. However, Norm is caught with the undelivered mail by a police officer, who arrests him. As it may jeopardize his career, Cliff doesn t set the record straight with the police and lets Norm be hauled off to jail. Everyone in the bar can t believe that even "weeny" Cliff is treating his best friend, one who was only doing him a favor, in such an abhorrent manner. After exhausting all other avenues, they all finally force Cliff to own up to the situation or face being ostracized. He does so, albeit reluctantly. The first Norm sees Cliff, he is as furious as he has ever been. After Cliff offers a heartfelt apology, Norm does eventually forgive his best friend, although not without first some retribution.