Rainbow Dash's competitive spirit is put to the test when a new pony challenges her to a contest unlike any other. Rainbow Dash faces off against Dishwater Slog in loser-take-all race to finally prove which pony is truly the worst.
Tropes for this episode include:
- Berserk Button: Dishwater Slog pushes Rainbow Dash's when he claims the reason Rainbow refuses to take part in his challenge is because she's scared.Rainbow Dash: "Oh no, he did not!"
- Brick Joke: Rainbow Dash borrowing a book belonging to Applejack. The first time it's mentioned is when Applejack questions her on why she wants to be the worst at something. The second time Applejack brings it up as part of her attempt to make Rainbow Dash mad. The third and final time is after Rainbow Dash loses and gives it back to Applejack.
- Competition Freak: Rainbow Dash says she can't turn down a friendly competition after Dishwater Slog challenges her.
- Graceful Loser: Rainbow Dash congratulates Dishwater Slog for winning who becomes shocked and starts off his Villainous Breakdown.
- Jerkass: Rainbow points out for somepony who doesn't put in alot of effort at being the worst, Dishwater Slog does put a lot of effort at being a big jerk.
- Springtime for Hitler: Rainbow Dash points out that Dishwater Slog succeeds at failing therefore he failed at failing.
- Villainous Breakdown: Dishwater Slog does not take well when Rainbow Dash takes her loss like a good sport and refuses to play his game by his rules.
