I'm going to blow up on a friend in my gaming group
What did your friend do to deserve that?
He was being a dick to me and telling me to pass him a soda when I was in the middle of a play.
Maybe you should just talk to him and tell him how you are feeling! Blowing up on him can just lead to bigger and bigger problems.
SHUT UP! He will learn one day.
You shouldn't be blowing up at your friends over small things. If you are feeling irritated with your friend's behaviors, let them know that you are busy and they should wait until you are free to help them. Good friends will understand when it is appropriate to ask for favors.