I have never noticed this before with my friend, but at a recent party, he would start talking to me, and his lips/mouth would start talking, then words/sounds would follow maybe 2 seconds later. Sorry, this is hard to explain.
It's as if, he thought he was speaking, then turned on the voice late. I have known this gentleman for several years and never notices this before.
Is this a known condition?
PS. I found something on Google about tardive dyskinesia, but that looked rather uncontrolled. With my friend, he moved his lips as if he was forming words. Not some random movements.