Requested by GIGA-XISBASS. Probably the most normal request I got.
Let me break this to you.
Discord (As in the living god of chaos.) managed to break free of his stone prison one day (We can assume that some dumb pony builder tossed his hammer too hard and far.) and decided to rather live on his own island rather than mess the Elements of Harmony.
Why?
You want logic? You weenie. You wuss.
So he created his own castle of cotton candy, spikes, a chocolate river, some midgets, rubber bands, hats, and other things. If you looked at it from a hundred miles away, you would say it looked like Canterlot Castle; out of the ground rather than in a mountain.
Everypony decided to keep their distance from Chaos Island (Named after the flyers that rained in Ponyville the day after his escape.), even Twilight and the Princesses. Discord was a headache, and if he was minding his own business, then everything was fine. As long as Discord didn't give everypony paper cuts.
But enough about the small ponies. You want Discord.
"And there I was….surrounded by those jackals I was talking about." Discord said, his arms wide.
"Oooh!"
"My, my! What happened next?"
"I snapped my fingers. They exploded like favors at a party!" The three started to laugh.
In the courtyard of the mad castle, Discord sat in his chocolate hot springs, with Princess Celestia and Luna.
Don't ask questions, dummy.
"Oh, Mr. Chaos!" Luna said, get herself some grape juice. "What other incredible exploits have you had?" She, with her unicorn magic, served everyone else.
"Nothing so far, but…I'm think we could make some…" He said, stroking the chin of Celestia, both giggling.
"Sir Discord!" Celestia said, taking a sip. "You wouldn't think that two princesses that control the heavenly bodies would sleep with a god of chaos?"
"Hmmm…" He laughed, and the princesses joined him.
"WHAT IS GOING ON?" Discord hopped out of the spring, surprised by both the voice and harsh tone of said voice. He turned around. The princesses just giggled, despite none of them having any alcohol.
"Oh…it's you."
"WE REPEAT, WHAT IS THIS?" Luna said, in the Royal Canterlot Voice, like her sister beside her.
"I thought we had a silent agreement." Discord said, a little annoyed. "You stay off my island, and I don't litter on yours."
"BUT WHO…I REPEAT, WHO…ARE THESE FAKES?" Asked the real Celestia, pointing a golden hoof to the fake Celestia and Luna in the spring. The fakes just giggled, not aware they were face-to-face to with the real versions.
"These are clones of you, you dumb sea cows." Discord said, going back to his usual self. "I was getting lonely on my island…I almost considered a compromise! But then I remembered that I could just create clones of anyone with the personalities I wanted! Seeing of course that Twilight and friends are such party-poopers, I decided to go with my favorite two ponies…Princess Tia and Princess Woona!"
"DO NOT CALL US THAT!"
"I don't care. Now leave before I decide to send the Equestria Daily to everypony in Equestria for free!"
The two princesses growled, sending a cold shiver down Discord's spine. They left in a flash. Discord made a mental note to add more spikes. And more Spikes.
"So…who was that?" Asked the fake Celestia.
"Nopony special." Replied Discord. "Now, about us making a tale to last all of time…" For the rest of the day, laughter could be heard.