I'm upset at my mother during an argument
It am sorry to hear you are having problems with your mother. What did she do to upset you?
Because she is a selfish bitch with a weird sense of humor
That is still your mother though. It is okay to get upset as long as it does not get out of control.
Suck it up. I still have it better than most. I'm more upset at myself.
There is no need to get excited and be dramatic by yelling at your mother. This will only make everyone more upset.