Five minutes earlier:
"So, Discord, what is it you wanted to talk to me about?"
"Oh, nothing special… I just wanted to say that we're gooooood friends!"
"Awww… that's so sweet of you!"
"OF COURSE IT IS!"
"Anyway… You are also a very SPECIAL friend…"
"Oh youuuuuuuu… giggle"
"…since you are by far the oldest!"
"Huh? But wasn't Fluttershy your first friend?"
"Oh… Now I get it…"
"…"
"Oh c'mon, Celly, don't give me that face! It's just a little teasing between friends!"
"And since friends should be close, I allowed myself a little peek into that locked drawer of yours!"
"What?!"
"You… You've looked through my private stuff?!"
"Relax! I found nothing interesting…"
"…except that picture."
"Uh… W-What picture?!"
"Well, THIS picture of course , which I immediately gave to the press."
"…"
"Don't worry, Celly, I did you a favour with this! Look at the reader reactions: "
"Oh! Not bad!"
"Although… I have to ask you something, Discord…"
"Do… Do YOU like my flank…?"
"WHAT?! OF COURSE NOT!!!"
"Oh… Why not?"
"A Spirit of Chaos like me has a refined and noble taste, like the elegant curves of Fluttershy!"
"I see…"
"Your plot is a huge, saggy, old mass of cake-fat, which is only good for warming up the throne for Twilight!"
angry-godhorse-noises
"Uh oh! gulp Um… Isn't another important part of friendship… forgiveness?"
After a short chase, the scene of the gif ensues.
Later:
"Oh my… though I appreciate Discord liking my… um… curves…"
"…he deserved being punished for being a meanipants to Princess Celestia!"
"And thanks to her, I got some ideas for the bedroom… Whether he likes it or not."
"I hope he does not!"
Background is a blurred and zoomed in version of this picture by Culu-Bluebeaver "Here Background":Canterlot-706953648