What to do about the argument i just had with my boyfriend?

well maybe you should have left out the sarcastic remark on this one, which I know it really wasn't anything to get that angry over. He probably felt like you would have been more understanding and more concern about him having to go to the funeral, plus he did offer to go out the next day. I would probably say that im sorry and if he still don't want to talk then at least you said you were sorry and move on. If you guys are having that much drama then maybe you should think deeply about the relationship.