I've had a lot of very weird sleeping experiences, and one of the scaries experiences I've had was that when i was very young, i was suffering from sleep paralysis while i was in a dream, I was dreaming and I was aware of it, i tried to move and wake up but couldn't, i couldn't even open my eyes, so i was still stuck in a dream and while dreaming i was consciously getting really freaked out... so i was struggling with myself to actually fully wake up, It seemed like there were two things happening at once, one with on the sub-conscious side of the mind and one of the conscious... after about the longest 5 - 10 minutes of my life... i actually woke up and was probably suffering from a bit of shock, since i was actually afraid i was going to be stuck inside my own head...
note that this was very difficult to explain...
but usually after a period of time, it goes away, i think i suffer from this almost every morning... maybe an enormous amount of will power is required or you just have to wait until it subsides...