Royal Foal Play (private with diokno44)
 

In Canterlot we join the Princess of the Sun herself Celestia in the midst of having a horrid nightmare as she slept. The poor princess had been having them constantly and as such had been having accident after accident on her sheets which would be humiliating for Celestia if anyone found out.

"Hmm...no! No!" Celestia whimpered as she dreamt she was running away from some horrid creature, she ran into a rickety bridge and tried to fly, but her wings were gone! She tried to teleport, but her horn gave off sparks!
"Leave me alone!!!" She shouted to the pursuing beast.

The princess found herself in the river now. The water had turned an amber color. It took her further away from the creature. In the real world, quite the damp spot had formed on her bed.

Celestia whimpered and woke up.
"Ugh, another nightmare?" She sighed as she felt the wet spot on her bed.

Discord came in, a tray of food on display. His jaw dropped, ¨Celestia! I´d have thought your mumsy and dadums would have tought you not to pee on the bed.¨ he said, snickering.

Celestia gasped seeing Discord.
"Shut up! If you tell anyone I will send you to the sun instead of the moon!" She growled, she wouldn't really do that, but she had to say something to keep him quiet.

¨Oooh, seems like somepony woke up on the wrong side of the bed.¨ Discord smiled. ¨Hmm, tell you what Sunbutt,¨ a diaper appeared in his claw. ¨How bout a bet? Since you can´t seem to control yourself, if you don´t use this diaper at all today, I shall do whatever you desire.¨ He snapped his digits, as it appeared around Celestia, ¨But if I win, you have to dress and act like a foal.¨

Celestia blushed red and gasped.
"No! I will not wear this Discord!" She tried to get it off, but it just wouldn't budge!

Discord tsked, ¨Come on Celly, surely you aren´t scared of a little old bet.¨

Celestia groaned.
"Two questions: One, will I be able to hide this diaper at least?
Two, you will do anything I say if I don't have an accident?"

¨No, and yes.¨ Discord said, checking a watch he now wore. ¨Oh, look at the time, you have court.¨ He waved, ¨Ta-ta!¨ He teleported away.