To jump the queue means to enter a queue or line at any position other than the end.
Mostly used in Britain and Australia. In the US they say 'cut in line'.
Excuse me, I'm in a bit of a hurry. Could I please jump the queue.
not waiting your turn in line...cutting to the front.
The student, Andrew Meyer, who was well-known on campus for his practical jokes, was Tasered after jumping the queue to ask Mr Kerry a series of questions in a Florida University lecture hall on Monday.