Man, I thought it was going to be a Motley Crue question.
I don't know the answer, but the dilema definately exists. I have found being honest is what works best for me. It doesn't always work, but I never have to think back over what I may have said. Practice helps, too. When I worked at a hospital, I was intermingling with alot of good looking nurses, every day. After a while, it became routine. It also became fake, but that seemed like the way it worked ten years ago. These days, I'm much happier tripping over my own tongue but being honest, than BSing my way through a conversation smoothly. That's just me, though.
That didn't help much, did it? Sorry.
Take care,
-Chris