I woke up in a fright to say the least. My arms were flailing in front of my face and I was gasping for air. Something heavy hung in the air, and I felt like I was drowning under deep, black water and the pressure on my chest was unbearable. The most aweful vibrations and sound were reverberating through my like knives, and I swear I could hear crying and growling through a sound so loud and obnoxious that I should not have been able to hear anything else. The sound was like a fog-horn or train whistle, or like that line from Dumb and Dumber when he asks if you want to hear the most annoying sound ever.