Throughout the episode, "Health Kicked," the title "Ultimate Extreme Ninja Competition", was mentioned in the dialogue. Earlier Clyde said, "Ultra Ninja Competition" and on the marquee at the arena in the climax reads, "Ultimate Extreme Samurai Competition."
In "Change of Heart" Leni said that there are 40 states. Mr. Grouse corrects her and says that there are 48 states. In reality, there are 50 states.
Throughout the episode, the contest is referred to as the "Ninja Challenge" but later at the contest, the sign outside calls it the "Samurai Challenge" instead.