I suppose this is as glib an answer as you are likely to get.
Do you trust that politician after listening to his glib speech?
It was a glib response to a complex question.
Don't be so glib and so unthoughtful with your answer.
When it has a subject, verb, punctuation, capitalization, a predicate, and a complete thought. A sentence is a sentence when it is handed down by a judge (or a magistrate).