The term 'Wally of Cookies' refers to AMOS, a character from the popular children's book series 'The Wally of Cookies' by author and illustrator, Robert Munsch. The books follow the adventures of AMOS, a young boy who loves to bake cookies with his grandmother. AMOS is known for his creative recipes and his ability to make delicious treats for his friends and family. He is also known for his kind and generous nature, always willing to help out those in need.