What does numquam paratus mean?

Excuse me, could you kindly explain the meaning of the phrase "numquam paratus"? I've come across it in a few different contexts and I'm not entirely sure how to interpret it. It seems to have a Latin origin, so I'm assuming it carries a specific meaning or weight. Could you possibly break it down for me, perhaps with some examples of how it might be used in a sentence? I'd greatly appreciate your help in understanding this phrase.