In Britain, to be queued up means to be in a line waiting for something. To be 'queued up' is a colloquialism and is something that some people would say, but it is nothing something that one would write, it is not good written English. To use it in a sentence, one might say: I was queued up waiting for my turn at the checkout when I spied Glenda and left the queue. Although it is poor English, like many colloquialisms, it is commonly used. Cued up is also a phrase in the English language, this has similar meaning, but it often refers to using equipment to set up a set of pieces of music or video footage, they have been cued up, ready to be played. The Queue is known as the Line in the U.S.A, one waits in a line, in the UK, one waits in a queue.