I’ve had several experiences of SP combined with fear and sometimes the feeling of a “malign presence” throughout my life, but recently I had an encounter with a special kind of the “old hag”: I woke up, flat on my back, paralyzed, feeling that BOB (from Twin Peaks, see large scary picture here) was lying on my chest, invisible, growling into my ear. At first I was overwhelmed by fear, but then I realized that he was only imaginary. This made me confident and I kind of started taunting him and making fun of him, since I knew he actually couldn’t harm me 
It was great. Finally, he faded away.
