I don't think it's rude. You know what's really rude, though? Talking with your mouth full of food. That's just bad manners is what that is. Nobody wants to watch that big bite of mashed potatoes clogging up your piehole while you're loudly interrupting someone else's conversation about economic inequalities to explain your racist justifications for imperialism and white supremacy as pertaining to the rise of the United States of America. Chew with your fucking mouth closed, and also just shut the fuck up. Happy Thanksgiving you bastard.