Write a story about an annual contest in the kingdom of dragons, in which participants compete to wet a diaper the most in one wetting. All Participants stand on stage each with their own supply of water. When a participant is ready to pee in a diaper, they must a request a diaper and then have five minutes to pee in it. The participant who fills their diaper with the most pee wins. To fill their diapers with the most pee many participants hold their pee for as long as possible before requesting a diaper, causing them to become very desperate to pee. Go into detail about the desperation and the peeing.