Rainbow Dash goes to get a glass of water for Pinkie Pie. Literally one second after disappearing into Twilight's kitchen, she does something to set off the smoke detector. And then a jackhammer. And then machine gun chatter, complete with muzzle flash. And finally, a barking dog.
Rainbow Dash (off-screen): Twilight, do you have any ketchup?
Celestia's last assignment and the "lesson" Twilight learned from it:
Spike: So, hey, you remember that letter she [Celestia] sent you where she asked you to get those pictures of Applejack's brother? Twilight: Yeah. Spike: And then she told you to write a critique of Mac's physical appearance? Twilight: Yeah Spike: And then she sent the critique to Mac? Twilight: (Levitates a drink into her hoof) Yeah. Spike: What'd you tell her you learned from that? Twilight (In a Monotone): A Phillips screwdriver is persuasive, but not seductive; and also Rarity charges out the butt for stuff I really think she should do as a friend.
Twilight and Rainbow Dash on the cloud from "Alicorn Day", when suddenly Twilight's wings disappear and she falls through the cloud.
Aurora on the bus:
Aurora Excuse me, weird adult talking to a kid. I'm supposed to avoid Stranger Danger situations. For that I need a pretty wide bubble without any strangers in it. Now, are you gonna have a Stranger Danger situation? *the adults move* Thank you! I can tell by the lack of proximity to me that you are probably OK adults.