But I've seen Asian people eat rice with chopsticks. This is the first time I've ever heard of it being a sign of impoliteness.
I use chopsticks for other purposes too. One time I had my nephew play with it as a drum stick
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Also when I feel like I have to diet, I use chopsticks because it's really difficult to eat with it. In the end you'll be frustrated and you'd only be able to eat little.