Dream fluidity

Do you know the feeling you get when you just had a dream and you want to remember it, and you are just waking up? And the only way to keep it fresh in your memory is to remain in a semi-asleep state, motionless, and if you move or you begin to focus on stuff from reality like getting up, how bad your breath smells, brushing your teeth, having breakfast, or what you're going to do today, the dream images rapidly dissolve and disappear? Do you get that? I do. Like this right here: http://xkcd.com/430/

Have you ever stood inside a body of water with your head over the surface and looked down at the reflection of the ceiling or the sky above, and tried to keep the reflection steady and detailed? Have you noticed how hard it is to keep the image steady, because any movement you make inside the water disturbs the reflection significantly? I have.