Podemos dizer cutter
ou até mesmo queue cutter
The act of cutting is generally frowned upon by most people. However, it has developed a set of rules to allow for "fair" cutting. These include asking for "cuts" – permission to enter ahead of the person that was asked, or "back cuts" – permission to enter behind the person who was asked.
However, since cutting in front of one person is in essence adding to the wait of every person behind them, this technique is considered fair only if each person behind the one being "cut" allows it. Rarely will such things work in a formal line (such as an amusement park). "Back cuts," similarly, are generally considered impermissible because the person allowing the cut loses nothing by having a person enter in behind them, while everyone else behind the cutter
does suffer the additional wait.http://en.wikipedia.org/wiki/Cutting_(in_line