I'm going to leave work when I was scheduled while my boss and coworker have to stay
Don't you care about leaving them with all the work?
I don't give a fuck.
You should honor your work schedule. Ask for time off in advance if you need it.
I need it now, How dare you demand me to ask for time off in advance. It's my time.
I am sorry you feel that way, but you should expect consequences if you act like this. Your boss will remember this behavior.