I'm going to kick the new kid out of our group
Is there a reason why you want to kick the new kid out of your group?
I'm tired of him ruining all our fun.
How is he ruining the fun? It would depend on what your group is about before you decide to kick him out. If it has to do with school or work then maybe he is just trying to get everyone back to business.
You are too much. I don't care what you think.
I'm sorry you think that but you should be more respectful of others. There might be a reason why they are doing what they are doing. Why not try talking to them before you decide to kick them out?