Spike was given a new task by Princess Celestia, to teach baby dragons younger than himself to live in harmony with other creatures. His first student was a 2 year old dragon named Leon. Spike made a schedule of his daily responsibilities of raising Leon, which included feeding, bathing, and bedtime. It didn't state when Leon required diaper changes however, as that was unpredictable. Also, with so much going on, Spike found himself with little free time. So to make some free time, he started wearing diapers himself so he wouldn't have to take potty breaks. Also, to help save money, Spike made a large number of leaf diapers for Leon to wear.

This was based on that awesome roleplay I had with  Julio. I loved it so much, I'm gonna write a story about it in the future.