I think that secretly Carson is racist to all cultures because he was born into a redneck family. He grew up around people with 12 toes and 3 eyes and shit and realised that his life was going to suck. Then, when he hit adulthood he was forced into marrying his second cousin, not that he was concerned about that. After all, pussy is pussy to him.

So now, he hates on other cultures as a way to divert his insecurities about his own redneck cultural origins. And he also throws in a redneck insult every now and again so as to hopefully remain incognito.

We know all about it Carson, no need to hide. We can see your third nostril.

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