This is offensive nonsense. There is no queue; EU citizens have exercised a right of free movement guaranteed by international treaty. But it's revealing of the aims and likely outcome of Brexit.
|Theresa May. Source: The Independent/Reuters
What does May mean by this phrase? Of course, some of it is tribal signalling, almost beneath the level of spoken language. "Britain good, Europe bad" is the crude subtext. For this purpose, she might as well be flinging her own feces at a European flag. But there's something more interesting going on here.