I've had 2, one when I was a teenager. It was a nightmare really, there was a demon following me down a dark country road, I couldn't see him but I heard hooves behind me and I knew it was the devil or a demon. Then i realised I was dreaming, I couldn't change things that were happening in the dream a part from my own actions so I closed my eyes and curled up into a ball on the ground and decided to just stay like that till I woke up, then I felt a hand on my leg start to drag me but I woke up soon after that.
The other one I had a few months ago, someone was chasing me in it and I realised I was dreaming again so I decided I should be able to fly to get away and I was but it was more like a chicken trying to fly then cool Superman flying