You seem to be misunderstanding the concept of a queue. If you're in line at the post office, you can't "pause" to go the the bank and pick up your same place in the line with the same people when you return.
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If your a ps user, use your vita remote play feature and bring vita with you to the bathroom. If you're a pc user, there are lots of smartphone screen mirroring apps out there.
Did we run out of things to complain about ?