Clifford's Charm School Clifford the Big Red Dog : Season 1 Episode 76

Mrs. Bleakman is having a very special party for her book club members and Cleo and Mac convince Clifford that his regular good manners won't be good enough for the event. Clifford believes he is just fine the way he is, but Cleo and Mac insist on teaching him some special "fancy" manners. In the end, Clifford decides to just be himself – and ends up saving the party by providing shade for Mrs. Bleakman's guests.