I'm going to cut in front of someone in line,
Why would you cut in front of them?
They are not paying attention and they are holding up the line.
It is bad to cut in front of people in line. You should ask permission before moving.
But I'm late for work and the line should roll over in order to be fair.
Can you let them know the line has moved so they will move up. That is a much more polite way to get what you want.