Ah, baby boss child. Only children really give me a run for my money, I have noticed.
First off, when he told me I shouldn't speak to him like that I would look him dead in the eye and say, "Stop it." He is sassing you and that is not cute in the least. What do his parents say to him when he says things like this?
Secondly, IF you cannot be nice to your friends then you cannot play with them. How long that lasts depends on the situation. If another child could get hurt from your behavior, then you are going to be playing in a different area for the entire playtime. You can try again next playtime. I don't call that separation. I call that redirection for the older kids.
I am redirecting you to play in a different area. It just so happens that new area doesn't have any friends you can hurt. If a child is just not minding in one center, then I will redirect them to another and there ARE friends there. But violent behavior? You are getting redirected to an area you can play in where others won't be harmed.