I'm going to skip the line.
That's rude! Why would you skip the line?
Because I don't wanna wait in that long line.
It's mean to cut in line. It's expected that you will wait your turn because everyone else in line has done that.
Blah. I couldn't care less.
I understand not wanting to take the time to wait in line, but if everyone skipped the line, nobody would ever get anything done. People would just be constantly fighting and trying to get ahead of each other. That's why it's important to patiently wait your turn so that everyone gets through the line in a timely fashion.