A bad-ass fucking pony from My Little Pony: Friendship is Magic. She'll make a dress faster than you, and whine about how you take long to do it. And laugh in your face like this. "BwaHA-HA!"
Guy 1: "Dude, Rarity was awesome in that last episode!"
Guy 2: "I thought Fluttershy was pretty cool in it too."
Guy 1: "LOL"
A girl that is both smart and hot. It is rare to find a girl like this so thus, rarity.
Kara, Jason's date to HC is a rarity.