Blah blah blah

This is one of the most invasive terms I've encountered.

It is the ultimate expression of malaise. The implication is that there is more to the story being told. You, the listener, are being spared those meaningless details. Then again, if the details are meaningless, why bring them up at all?

"Blah blah blah" is nothing more than a placeholder disguised as a transition from one body of facts to another. If it means something, say what it means. If it means nothing, then say nothing.