Translation by Physicrodrigo (adapted from Mexico-New-Spain modisms and slang):
Rarity: Why is it that every single human Applejack I want to make lesbian love to is black!
Applejack: “Damn, I guess I shouldn’t have worked (outside, implicit) so often.”
Also, there is this famous meme in the Hispanosphere MLP Community, which consists in portraying Rarity as humorously racist and classist as possible, because she is White AF and rich and because of her “species-cism” vs zebras, dragons, yaks, diamond dogs…
I can’t tell if you’re being racist as a joke or not.