I dreamed about being on a roller coaster. I just had to keep reliving the part where it starts at the very top and goes practically straight down, if not inward a little bit. I had a crappy little seatbelt as my only protection, and handle bars on the sides that I could barely hold onto. As it dropped down, somehow it was going so fast that I was being pulled upward and out of the car, so I had to really hold on to the bars, but my hands were slipping. Though it wasn't horribly scary, it was as scary as being on a real rollercoaster, which is pretty scary to me. And fun.