I'm going to cry while in line.
Why would you do that?
I am tired of waiting in line and want to get to the front.
I know you're upset, but it's not good to be overly dramatic. You need to learn some patience and wait like others are.
I want to cause a scene here.
Causing a scene will not get you to the front faster. People will see you making a scene and you will lose face with others. The best course of action is to wait in line in an orderly fashion.