My Little Pony: Friendship is Magic, Season 1

Rainbow:
You'd think she'd be excited...?

Pinkie:
Excited?! EXCITED?! Why would I be excited to attend my own farewell party?!

Twilight:
[confused] "Farewell party"?

Pinkie:
Yes! You don't like me anymore so you decided to kick me out of the group, and throw a great, big party to celebrate! A "Farewell of Pinkie Pie" party!

Applejack:
Why in the world would you think we didn't like you anymore, sugar cube?

Pinkie:
Why? Why?! WHY?! Because you've been LYING to me and avoiding me all day! THAT'S WHY!

Rainbow:
Uh, yeah. Because we wanted your party to be a surprise.

Rarity:
We've been planning this party for such a long time, we had to make excuses for why we couldn't attend Gummy's party so that we could have everything ready for yours.

Twilight:
If this is a farewell party, why does the cake I picked up from Sugarcube Corner say: "Happy birthday, Pinkie Pie"?!

[Pinkie takes a closer look at all of the decorations and realizes everything]

Pinkie:
[hair poofs back to inflated mode] Because it's my birthday!!