Breaking / Cutting a line

There is a special place in hell reserved for people who do this. We've all had to wait in lines to pay bills, to shop , for errands and we've all had to wait. As annoying as that is things totally get out of hand when out of no where someone nudges you and pushes you and lo-behold ... He's broken the line and gone ahead. These kind of people are super frustrating and must be banned from the shop where they attempt to pull of such stunts.