After patting Trixie Anon learns that she likes the attention and he gives her scritches. Anon fails to realize that Trixie thinks scritches are special, so when he gives Twilight scritches she gets very upset.
Ms. Cherilee has assigned the class a project to get them thinking, what makes the ponies in their lives special? Naturally Dinky writes about the most special pony she knows, her mother Derpy.