Conversation title: No Pranks Inside the Castle of Friendship!

Pinkie Pie: "Hey, Rainbow Dash! I've been wondering something..."

Rainbow Dash: "Go on ahead. I really wanna know what you have up on your mind."

Pinkie Pie: "Do you think we should set up a prank around castle?"

Rainbow Dash: "Now that you mention it, I guess we should go and prank Twilight and she would be shocked when set up some crazy, weird decorations around her castle... Except we gotta figure what decorations ARE the craziest ones we can come up with."

Twilight Sparkle: "Oh, no, you aren't! I'm not allowing another prank inside this castle!"

Pinkie Pie: "Why not? It would be so fun! After all, the others don't mind."

Twilight Sparkle: "You don't decide what's allowed and what's not allowed in this castle! I'm the one who created this castle using magic. And what will not be allowed are pranks in my castle!"

Rainbow Dash: "Sheesh, you never enjoy any pranks me and Pinkie pull on you and everypony else! You are jealous!"

Twilight Sparkle: "Jealous? Why would I be jealous?"

Pinkie Pie: "Because you are not a prank fan. That's why, silly!"

Twilight Sparkle: "If you even try and pull a prank on me again, you both are gonna be in huge trouble with me!"

Pinkie Pie: "I say pranks are allowed as long as everypony will agree with me!"

Twilight Sparkle: "They would never agree with you on that one!"

Pinkie Pie: "We'll just have to see."