If taking God's name in vain means this then we're in big trouble. If you swear by God and then break the oath then you're defaming God's name in some fashion. I don't think that this is necessarily using the Lord's name in vain in an empty fashion because I'm trying to make a point.
Here's another way I think we use the Lord's name in vain all the time that I think is much worse than saying "Oh god. Now I don't know how you feel about it, but I cringe whenever I hear people using the Lord's name in a loose and meaningless way.
So she said "waiting room only" but she really meant " no waiting room only. This is one sin for which there is no temptation and no provocation. It used to be that the prophets of the Old Testament had to stake their lives on their confidence that they had heard from God. Now I did take a moment to call Mike Horton who is a friend of mine.
But then we're not talking to them, we're talking to God. More often than not " God bless you " is just the Christian's way of saying " Goodbye.
What is the real meaning of "taking the name of the Lord your God in vain? Things like god-less, god-mother or god-son. I'll tell you.
At least that's the way it seems to me. People don't talk like that. Sometimes the phrase "my god" expresses surprise and you might even think that's using it literally as an appeal to God.
This is the Christian way of saying "Have a nice day. And that could certainly apply to my use of "by god. Everything was full. Or when many of us say "God told me" we don't really mean it that same way.