Zak gets a thorn in his foot while Zak and Wheezie were practicing during the Dance Contest.
Emmy and Max get their instruments in Dragon Land to play for Zak and Wheezie. They dance to a dragon version of "This Old Man". While practicing, Zak steps on a sharp object and everybody convinces him he should go to the doctor. Dr. Booboogone suggests that he squeezes Wheezie's hand while she takes the thorn out. He does and his foot feels better. Later, it is time for the competition. Zak and Wheezie win.
Zak: The doctor's gonna fix me!
Ord: Zak didn't mean to step on it. he was just practicing his dancing and when he put his right foot down he didn't see it and then he stepped on it.
Notes and Trivia
The song "This Old Man" had the lyrics changed to make it appeal to the characters in Dragon Land.