The Bumble Nums

Ultimate Upside Down Cake

Today, the Bumble Nums are going to make Ultimate Upside Down Cake for Yeti's birthday. They'll have to travel to Upside Down Town to get the secret ingredient: Super Swirly Icing. Can Humble, Grumble and Stumble make it to the Upside Down Town grocery store in time for Yeti's surprise party? Watch and see.