that's happened to me!!!
I fell asleep in the afternoon one day when i was about 15, and woke up because my tv was on and the news music was loud. and i couldn't move at all, i was trying to but i couldn't and i remember my back was to the tv and i was thinking why wasn't a lying the other way!? because a news update was on which meant home and away was next (aussies will know what that is) I was definately awake and it lasted for about 20 seconds.
Bizarre, never knew what the hell happened