Tiffany's sisters hosts what she hopes to be a nice family dinner. Instead, Tiffany and her new friend Pat co-miserate awkwardly about medicines, which leads to a failed dinner party.
Mr. Kimble talks with the parents of his kindergarten student and learns that most of the children come from broken families where the parents are separated or divorced.
After Penny helps Sheldon with his show, Amy tells him to demonstrate appreciation for her help. Sheldon does so and complains about all of the social norms as he learns about more of them.