From http://begthequestion.info/ :

"Begging the question" is a form of logical fallacy in which a statement or claim is assumed to be true without evidence other than the statement or claim itself. When one begs the question, the initial assumption of a statement is treated as already proven without any logic to show why the statement is true in the first place.

laureny is claiming that it's "about the children", but the implicit assumption there is that there's something wrong with cursing in the first place. laureny assumes "it is not to be used lightly" and that children need to understand this - but that's exactly the item under discussion.

There is when it's used in regular speech for no reason, like using "like" every other sentence instead of just pausing.