Probably my worst one was when i got sleep paralysis (inability to move in sleep: body is asleep, brain is not) and i actually felt a small creature attach to my face and start clawing at it. It was making weird sounds and i couldnt open my eyes. I woke up in a cold sweat. (the worst dreams are the ones that you actually feel and sense). Does anyone else get sleep paralysis? It happens every few months for me...