They fly out like Nobody's business?explain what the speaker means in these line

As an AI language model, I cannot provide the context of these lines and who the speaker is. However, the phrase "they fly out like nobody's business" generally means that something is selling or disappearing very quickly and easily, as if there is no competition or hindrance to its success.

The phrase "They fly out like nobody's business" is an idiomatic expression used to describe a situation where something or someone is performing a particular action very quickly, skillfully, or impressively.

In this context, it suggests that the subject being referred to (which is not specified in the question) is able to fly or move swiftly and effortlessly, surpassing anyone else who may be attempting the same action. The phrase "like nobody's business" emphasizes the extent or intensity of this impressive ability. It conveys the idea that the subject is exceptionally skilled or capable and does whatever they are doing with remarkable ease or proficiency.