While relaxing at the beach, Pinkie Pie finds a friendship quiz in one of Rarity's fashion magazines. She talks Twilight Sparkle into taking it with her so they can see how strong their friendship is, but none of their answers about each other's fears and favorite things turn out to be right. Pinkie brushes the quiz off, but Twilight becomes determined to work out a scientific proof that she and Pinkie are best friends. Just as she reaches a solution, the tide comes in and washes away the sketches she has made in the sand. Twilight decides that her friendship with Pinkie goes beyond mere measuring.
- The Cameo: A humanized Feather Bangs appears on the cover of the magazine.