Spoiler warning: This particular entry relies on Season Seven.
"I don't know. Sometimes...friendship is hard, I guess."
"No kidding. I mean, take you for example. Bottling up your anger just because you were worried about how I would feel? Seems a little extreme, if you ask me."
"Hey, you were the one willing to let yourself be chewed up and swallowed by a manticore the first day we met!"
"Hm, yes, that's true. Oh! Does that mean ours is the most extreme friendship ever?"
"Haha! I can only imagine what our friendship lessons would be like!"
"Ew. Friendship...lessons? That just sounds wrong when I say it."
"Yeah, it can seem pretty strange at first. Still, it's helped me a lot on my way to be a better pony."
"You can't be that much of a goody-two-horseshoes. After all, you're still learning."
"I've graduated!"
"Really?"
"I think. I mean, it's an official proclamation and all, but don't graduations usually have more...I dunno, ceremony?"
"And a diploma."
"And those funny square hats."
"I know a pony who makes a lot of funny hats."
"You're talking about Rarity, aren't you?"
"I don't even know the name!"
"Heh. Say, do you ever think you'll be as good a friend to the rest of the girls as you are to me?"
"What? Why?"
"Oh, it's just a thought, really. I noticed that you take pleasure in getting under Twilight's skin, which I totally understand. As long as, you know, you don't go around her castle making her stuff disappear again."
"What about 'teacup!'?"
"That's okay. Spike's got that handled."
"Yay! So, what's this about the other ponies?"
"Well, I'm friends with you. I'm also friends with them. But you aren't friends with them."
"Yeah, that's true. And I don't expect, or plan, to be."
"Why?"
"Huff! Do I really need a reason?"
"I'd...kinda like to hear it."
"You don't intend on trying to mend any hurt relationships, are you?"
"I...maybe? Maybe if I think it would work?"
"Oh, just use your little mind-control spell, and everything--"
"Hey."
"Oh. Shoot. Sorry! I did it again... I'm sorry."
"It's okay, I forgive you. But please do better to remember."
"Of course. Um..."
"Anyway, I'd like to see if you can be friends with them, too. If for no other reason than I won't have to choose who I hang out with!"
"Whom."
"Oh, whatever."
"Heheheh. Um, I don't think it'll work, really."
"Why not? I mean, I know you've made your share of mistakes that involved them, but I'm living proof that things can be better."
"Oh, I don't doubt that. Not in the slightest! No, it's less about 'I can't have it' and more about 'I don't want it.'"
"Don't...want it?"
"Come on. Just look at how much fun I have getting under Princess Twilight's skin! I mean, dry pretzels and vanishing tables? Ah! It's an instant classic!"
"Ah-heh. Well, that's Twilight. What about..."
"The rest are just as easy. All I have to do is make that one unicorn's mane green, and I'm laughing for an hour! Although she would probably expect it from me, so I'd have to get more creative..."
"Trix, please don't go changing Rarity's mane."
"But you haven't seen it! It's hilarious! And the way she screams is just...eeegh, too funny!"
"I can't...heh, actually, it would be pretty funny!"
"Ah-ha! You agree!"
"I-I agree that it would look funny! Not that you should be cruel!"
"Pbbbt. As if temporary mane dye is cruel."
"Rarity would be really upset if you did."
"That's the point! These ponies are a lot of fun when I'm teasing them! Oh, I know enough to not push them too far of course...as my lovely experience with ancient magical relics will make clear. But sometimes they can give back as good as they get, especially that blue, fast one."
"Rainbow Dash."
"I don't even know the name!"
"Really, it's Rainb--"
"Ah-ah-ah! I want to keep it that way! When we use names, things get personal. For better or for worse, they get personal. And I want to make sure that I don't go too far with my tricks, regardless of how minor a detail may be. That's why my whole show is revolving around me pushing myself to new limits, like the manticore mouth-dive, instead of me trying to showboat like a few years ago."
"Wow. And you really think that not using their names will help with that?"
"Of course! When it's just another face in the crowd, you're able to focus on your act instead of a pony's expectation for you. Same thing for little pranks."
"Huh. I don't really get it, but okay. Still, no cruelty!"
"Oh, pbbt. You graduate from friendship lessons and suddenly you're a law-abiding citizen. Don't you want to know what I stuck in the pink one's pancakes?"
"H-how would you have gotten close?"
"Hm?"
"Trix, there are cannons in her pancakes!"
"W...w-what?"