Nǐ bié xiàng gè xiāngbālǎo yīyàng dàjīngxiǎoguài de.
Don't make a fuss like some yokel.
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乡巴佬 is derogatory and dismissive. It's used to mock someone as unsophisticated or ignorant of city life. Avoid using it directly to someone's face unless joking with close friends.
memory
乡 (countryside) + 巴佬 (fellow/guy, colloquial and rough) — a rough countryside fellow.