You use the phrase begs the question when people are hoping you won't notice that their reasons for coming to a conclusion aren't valid. They've made an argument based on a lame assumption. The question is What's your support for that premise? Here's an example of a simple argument that begs the question.

How do you use the term begs the question?

Begging the question means "to elicit a specific question as a reaction or response," and can often be replaced with "a question that begs to be answered." However, a lesser used and more formal definition is "to ignore a question under the assumption it has already been answered." The phrase itself comes from a ...

What does it mean if something begs the question?

The fallacy of begging the question occurs when an argument's premises assume the truth of the conclusion, instead of supporting it. In other words, you assume without proof the stand/position, or a significant part of the stand, that is in question. Begging the question is also called arguing in a circle.