Summary: When Emily and Ethan can't agree on the "superior dessert," Grandma Gabby takes them to meet Mother Theresa and to a literal flat earth to learn how to disagree civilly.
This episode contains the following tropes:
- An Aesop: "'Disagree' doesn't mean 'enemy.'"
- Butt-Monkey: Derek keeps getting hit by everything at the construction site for Mother Theresa's orphanage.
- Flat World: The twins visit a planet called Flearth, which is a literal flat earth.
- Freudian Excuse: Bruce became a bully to hide his insecurities.
- Historical Domain Character: The twins visit Mother Theresa.
- Identity Breakdown: Played for laughs when Copernicus calls Derek both a cat and a dog, causing Derek to have something of an existential crisis.
- Interspecies Romance: Derek has a brief fling with a female sasquatch. It Makes Just As Much Sense In Context.
- Jerk with a Heart of Gold: This is the first episode in which we see Karinne put her bossiness to work for a good cause; in this case, deciding which baked dessert to enter in the auction fundraiser for the local animal shelter. Though she's still not fond of Derek.
- Must Have Caffeine: A customer at the Tuttles' bookshop and cafe buys a book on how to quit caffeine—along with four large iced coffees.
- No, You: When Emily calls pie (pi) an irrational number, Bruce retorts, "No, you're an irrational number!"
- O.O.C. Is Serious Business: Emily gets so frustrated with Ethan that she calls eggs "chicken doody," then bemoans the fact that she's come to the point of spouting scientifically inaccurate information.
- Parody: Derek does the pose for Miley Cyrus' "Wrecking Ball."
- Punny Name: The two Flearth citizens the twins meet are named Ball-to and Flat-icus. The former believes Flearth is round, while the latter says it's flat.
