Extend the Story - Add a Room

Despite the intimidating size of the toilet and the ferocity of the flush, Twilight was still determined to use it. She was a princess, she didn't use some foal's potty or a diaper. She would do her business like a civilized pony.

The princess trotted over to the large toilet. "How do they expect anypony to use something so big? Even Big Macintosh wouldn't be big enough!" She complained as she struggled just to grasp the edge of the seat and pull herself up. If not for her wings it would've been impossible.

At last Twilight was able to reach it, scooting up onto the seat. Normally she would be able to lean all the way back against the lid and do her business. But a toilet like this was so big that just sitting on the edge of the seat required a huge amount of balance. She gulped, not daring to look down into the bowl. Her parents and foalsitter had always assured her that she could never go down the drain. But then they'd never encountered a toilet like this.

It was too late to have second thoughts though, Twilight could hold back the call of nature no longer. When at last she finished going she was quite relieved, but her relief was premature as

She realized there was no toilet paper