What's the worst nightmare you've had? Last night I dreamt that I'd gotten a great new new job, but then my 1st day forgot how to do everything. I couldn't keep up & ppl were whispering abt me in mean ways. 
Of course, this coincides with my sending off a resume for said great job. sigh Explains a lot. But determined to go out there and have a great day anyway... with lots of coffee. :/
I had an "Old Hag Syndrome" type dream once, where I think I was awake, but I couldn't move a muscle, and all of this black ooze started slithering into my bedroom. I could see it coming,
but I couldn't escape. It started climbing the walls of my bedroom, and across the ceiling where it gathered and started to drip down on me.
Finally enough had gathered that it started to move as a stream into my mouth. That finally got me to scream myself awake.
Just thinking about it still freaks me out.
being eaten by a great white shark