This is where you wake up and can not move. Also I have been asleep in a room with a light on, and I wake up and cant move, and I hallucinate(not because of drugs!) I have had my arm start floating and a picture of Jesus at my grandmas house was laughing at me, seriously! It is pretty freaky but usually only lasts a few seconds to 30 seconds. It is because your brain wakes up and your body is still dreaming. I have to jerk myself awake in my dream when this happens. Anyone else experience this?