S5, E16: Darrin finds that his dream that Cousin Serena turned Clio Vanita, an important client, into a monkey is true. Clio is to sign a new contract at 11 a.m., if she approves Darrin's slogan. Samantha assures him that Clio won't remember am thing that happened. Serena returns, but the monkey escapes. Samantha's search leads from a small boy to his mother, to the pet shop where she sold the monkey, to Joe, an organ grinder, who won't part with it. A cop thinks that Joe stole the monkey and grabs it, but drops it when it bites him. In the chase that follows, Samantha recaptures the monkey by magic and takes it into a Ladies' Room. The cop is mystified when Samantha emerges with Clio and Serena, but no monkey. Samantha takes Clio to Larry's office where the organ grinder arrives with another monkey. Samantha announces that Darrin's slogan is "Don't monkey with anything but the best. Drink Vino Vanita." Clio loves it and signs the contract. Later, Darrin finds Serena entertaining Tabitha by bringing nursery rhymes to life. When he orders her out, Serena gestures and Darrin sprouts an enormous nose. Serene pops out and Samantha tells Darrin he'll have that nose until Serene cools off again.