This relates to the Pony "Rarity" from the series "My Little Pony: Friendship is Magic". It is a term given to a girlfriend or ex-girlfriend when she becomes super bitchy and complains a lot.
"Man, your girlfriend has been a real Rarity lately."
"Dude, I am so glad you dumped her! She was such a Rarity!"
"Dude, I am so glad you dumped her! She was such a Rarity!"
by Uncle Nerdicus September 21, 2013
Get the Rarity mug.Related Words