>>42449366 (OP)
Rarity likes to pretend to be all fancy and sophisticated, but the truth is she's a rube. A well-scrubbed hustling rube, with a little taste. Good nutrition's given her some length of bone, but she's not more than one generation from poor unicorn trash. And that accent she's tried so desperately to hide behind that fake transatlantic shit she puts on. Pure Ponyville. Bet her father worked in the gem mines, stunk like the mud ponies. And oh, how quickly the colts found her. All those tedious, sticky fumblings behind the Ponyville school house, while she could only dream of getting out, getting anywhere, getting all the way to Canterlot high society.
TL;DR she never learned to swallow her food before she takes another bite