Dreams can be difficult to articulate. Here's one that I remember very vividly that I had while in high school, (which was what, 16, 17 years ago..).
I'm sitting in class when a thunderous shaking is felt through the floor. Then came the screams. The screaming could be heard through the walls and was coming from adjacent class rooms as well as from outside in the hall. When I threw open the door I was greeted with a scene of utter chaos. Students running every which way; running for their lives. Then the thundering crashing and screams came from behind me, the classroom I had just left. I threw open the door and went back into the classroom, and I saw what everyone was running from. It seems funny sometimes when I describe it now, but try to imagine the horror of the situation as it played out in real time. What I was seeing, was the head portion of a great white shark, only much larger than a real great white, (perhaps it was a megalodon). It's as if the floor was the surface of the ocean, and the shark was breaching to feed on students. It only came out as far as it's gills, but the thing is, the floor was made of concrete, and the shark head was busting right through. Then it went back down and out of sight. I ran. Out in the hallway, a crowd of students exploded as the shark head burst from below, it's jaws wide. Airborne students fell into the gaping maw, and it chewed them, blood and limbs raining. This happened again and again, in the hall and in class rooms. Every time it burst through the floor, students and teachers were sent airborne, their fate sealed by gravity and chomping jaws of razors. Students were trying to escape the school, but the doors were locked. Figures..
My high school had a bridge that at went over the commons area, (lunch room), and the shark head was breaching and eating students on the bridge. It's body should've been 40 or 50 feet long easily. Yet it came out of the bridge itself, and when looking under the bridge, there was nothing. I determined then that the beast was of supernatural origins. I did not want to be crushed and cut in those jaws, so I decided to end my life, knowing that it would not stop until everyone was consumed. So I ran and jumped off the bridge, determined to land head-first on the ground below. I did, but I lived. It didn't even hurt. So I ran down the hallway determined to hide, and I found a diving bell. I got inside and hid.
Now, here comes that funny point where dreams diverge, and turn into something completely different. The next thing I remember, is walking down a paved path, with the shark. Yes, the shark was now wearing a suit, and had arms and legs... it was humanoid, except it had a great white's head coming out of a suit jacket. And it was holding roses. The shark, it seemed, was about to go on a date, and I was giving it advise, telling it not to be too nervous. WHAT THE HELL?
The end.