2x04 Luna Eclipsed

Twilight Sparkle: [Rainbow Dash is going around town with a cloud she made, striking ponies with lightning, her last strike scared] Rainbow Dash, that wasn't very nice.
Rainbow Dash: Lighten up, old-timer. It's the best night of the year for pranks!
Twilight Sparkle: Look what you did to Spike. [Spike chokes on his candy]

Night Mare Moon: [booming voice, Princess Luna animates a statue of her past self, Night Mare Moon] Citizens of Ponyville! You were wise to bring these candies to me. I am pleased with your offering. So pleased that I may just eat it... instead of eating you! [ponies scream]
Princess Luna: [transforms back into herself and spits out some fake fangs] I am not certain that did what you meant for it to do, Twilight Sparkle.
Twilight Sparkle: Just wait.
Princess Luna: For what? For... for them to scream some more?
Pipsqueak: Um... Princess Luna. I know there's not gonna be any more Nightmare Night, but do you suppose maybe you could come back next year and scare us again anyway?
Princess Luna: Child. Art thou saying that thou... *likest* me to scare you?
Pipsqueak: It's really fun! Scary, but fun.
Princess Luna: It... is?
Pipsqueak: Yeah! Nightmare Night is my favorite night of the year.
Princess Luna: Well then. We shall have to bring [booming voice] Nightmare Night back!
Pipsqueak: Whoa! You're my favorite princess ever! She said yes, guys!
Children: YAY!
Twilight Sparkle: See? They really do like you, princess.
Princess Luna: Can it be true? [booming voice] Oh, most wonderful of...! [normal voice] I mean... Oh, most wonderful of nights.

Princess Luna: Fun? What is this "fun" thou speakest of?