Deep lore: česky, adverb. český, adjective. is literally pronounced "Chesky". This actually means "Czech" in the Czech language. I don't think this is really a slur.
Deep lore: Puerto Rican youths who dress and act 'gangsta' and drive tricked out import cars with loud sound systems blasting 'Reggaeton' (a type of music that is like hip-hop with heavy percussion sounds).
Deep lore: (Pronounced "o-yay") Derogatory term used by non-Cubans. Derived from their frequent and rude use of the word "oye" in conversation. Means "hey," or "hey you."