I was awoken in the middle of the night by something heavy landing on my chest. A bit scared and unsure as to what was going on, I reached up to find out what had hit me. It felt like flesh, cold, clammy flesh! My first thought was "it's a frog."
Terrified, I tried to grab it to throw it off of me. It was too heavy.
I felt it again, a hand! In a half-awake stupor I began to panic. Did some sort of dead hand just fall from the sky and land on me!? Groping at this strange object, I found it was still attached to an arm.
Then I realized it was my hand. My right arm had fallen asleep and was completely numb from the shoulder down. I couldn't feel my left hand touching my right one. I had thought my right hand was lying next to my body on the bed. Relived that severed body parts were not falling from above, I left my numb arm where it was and went back to sleep.
(image from Vampires in the Fog)