The next day, the fox returns; he is much happier, out of pain, and anxiously awaits the installation of his new tooth. Dr. De Soto puts in the new tooth, but by now the fox has decided to give in to temptation and eat them. Dr. De Soto then introduces a new formula the couple created recently, and claiming that one application will prevent toothaches forever asks the fox if he'd like to be the first to try it, who, hating pain, readily agrees. The dentist takes his time and paints each tooth with the formula, then has the patient clench his jaws shut for a full minute. The fox is surprised to find that his mouth has been glued shut, as this is what the secret formula really is, but Dr. De Soto states that he "should have mentioned" that the formula needs time to permeate the dentin and as a result, the fox will not be able to open his mouth for a day or two. Stunned, the deceived patient can only reply with 'frank oo berry mush' and in a daze, leave with as much dignity as possible.