Watch Oswald - The Birthday Cake (2007) : Full Movie Online Free Oswald volunteers to make a special birthday cake for Catrina s birthday party. Madame Butterfly says that all Catrina needs is a small simple cake. However, Oswald ends up making a huge birthday cake, eight tiers in total, with a tiny cupcake on top. BUT after a collision with the Egg twins en route to the party will Oswald ever have the perfect cake for Catrina.