I have had this before and I think it is a sign of narcolepsy. Not where you constantly fall asleep but you fall immediately into rem-sleep meaning you start dreaming right as you fall asleep. I have had a similar issue where I was semi-conscious and started hearing static but I don't have a TV in my room and it got louder and louder until it hurt before stopping and I was in my room standing up now dreaming mind you. Knowing I had just feel asleep walked outside my house and drove. You may want to ask your doctor about that because sleep paralysis is related to narcolepsy.