"Did you just accuse my little Second Shadow of stalking someone?!?"

Rebellous spirit

"Hey Luna, why is Celestia always so nervous around Chaotic Neutral?"

Occupational choices

"And what do you want to be when you grow up Pole Dancer?"

Terrible tragedy

"SHINING, GO GET HELP, FLURRY IS HAVING A HEART ATTACK!"

One down, five to go.

"Has anyone seen Rarity?"

Or is s/he?

"You mean Pickleless was actually a girl?!"