He probably doesn't know.
it is stupid and ignorant .... race is irrelevant
his sarcasm is completely warranted
Yeah, it is rude and arguably racist. It doesn't matter what ethnicity he is. Get to know him and he might tell you of his own accord.
Yeah, that's probably not a very good thing to say to him. Put himself in his shoes, if people made comments like that about you your whole life, and some people looked down on you because of it, you'd probably be a bit irritated to.
I don't think so. If he's just being sarcastic all the time maybe he's just a douche? lol
I ask people quite often what their nationality is. They don't seem offended at all. I ask with a sincere open attitude.
Yes it is
Yes it is rude