By the time you see this, it’s already too late for you.
 
“Ssssooooo glad you could come j-j-j-join me at my partyyyy… heheheehAHAHAHAHAAAAAAAAAAA!!!”

@Bhazor  
“I’m looking at you STRUDEL!’

Before the night is through one of you will betray me.

I like this for some reason. Pinkie Ballon (sic), Twibook Smiles, and Princess Snaplestia are really getting into the party, yet Rariquin is sitting calmly beside Applebarrel and Rainbow Cloud, while Fluttertree is shyly sitting and Spike the Paintbrush(?) is enjoying being around his friends.

I guess Disney wouldn’t let her do the one from Aladdin. X3

@Antonyourknee  
They’re insane too.

alice in wonderland

@Taupe_Hat  
But Discords reformation Proved that even the god of chaos gets lonely. A sort of companion,advisory or something would be needed by discord eventually. Now if discord could cure a insane Celestia and presumably Luna and Cadence as well as these “companions” should be immortal to properly resonate with Discord,then he would be able to watch the princesses go insane again and again thought he would probably have to wipe their memory as well to prevent an irreversible breakdown or potential suicide attempts…unless discord can prevent death.

@Antonyourknee
 
She would be sane to start with, but how long would that last? Years, decades, centuries? She’s apparently immortal but even someone with a more than a millennium’s worth of wisdom would very probably have her breaking point.
 
Prereform Discord seems like the sort who would thoroughly enjoy just watching the Princesses go slowly batshit insane from having to deal with his chaos constantly for years on end and being completely powerless to do anything about it.
 
This wouldn’t be “one bad day” but potentially  
one bad eternity.

@Antonyourknee  
Hahahahahaaaaaa!! Discord and drama…that’s rich~

@Taupe_Hat Well that’s dark…but I think discord would rather have a sane Celestia around if only to torment with his insanity.More contrast and drama you know.

Alternatively this could be a scenario where Discord won and turned the mane six into inanimate objects while leaving Celestia and Luna to suffer in a chaotic hell.

1000 years after Friendship is Magic.  
Actually I can see this happening.
 
I remember reading one fanfic where Celestia and Luna had to forcibly remove their mother from ruling Equestria because eternity made her psychologically compromised.

How come the Mane six aren’t unsettled by how Crazy Celestia looks? I mean do they see her insane mane! Their right next to her for ponies sake.

“I’m so glad you all came to my birthday party this year. Heres to my third millenium! and you don’t look a day over 30 oh ha ha, thank you Twilight, my dear.”

Meanwhile in alternate reality where only alicorns exist and a Celestia is a delusional schizophrenic…

Insanity, even the ones who look so happy and relaxed fall to it one day!

This…is unsettling….