The Carnivorous Carnival: Part One - S2-E9
Trivia: At one point, Esme asks Olaf why Madame Lulu is working at a carnival, and suggests she could "have a TV show in the city" if she were a real fortune teller. Olaf then casually mentions that he tried that for "nine years," but it didn't work out for him. This is a very subtle nod to the series "How I Met Your Mother," which was set in New York City and ran for nine seasons. Neil Patrick Harris, whom plays Olaf, was one of the co-stars of "HIMYM" from 2005-2014.