I'm going to cut off my friend
Why are you going to cut off your friend?
Because I can't stand his ear piercings and weird clothing.
Is the way a friend dresses grounds for cutting him out of your life? I am sure your bond is stronger than that. It seems like a bad reason to me.
I don't care about his feelings, I'm going to hurt him with my words.
It is one thing to not be friends with someone, but wanting to hurt them with words it out of bounds. I think just speaking to your friend normally is the best way to air any grievances you have. You can come to a better understanding this way.