I vividly remember a dream from when I was extremely young, as in before I was even literate.
It starts out with a sort of multicolour, charcoal sketch of my family. Picture Calvin and Hobbes style, but with realistic proportions, and rubbed under charcoal. Judging by my remembered height relative to the others, I was around 5 or 6 at the time of this dream.
Anyway, our cartoony family is standing around, when an inexplicable flood enters the room. My mouth opens up and out comes a speech bubble, with a picture of a fish (remember, I couldn't read at this age). There's a dramatic scene shift, and suddenly I'm in a food court at the university. I remember a coloured plastic donut being thrown into a bowl of chili, and the woman serving it looking down unhappily. Around this point, a tidal wave of rolled-up black carpets starts unravelling itself through the doors. As the carpets hit my feet and knock me down, gravity shifts by 90 degrees, trying to make everyone fall out of the open doors. Everyone who managed to grab the carpets is dangling, and a guy next to me with a mohawk and pierced ear (the height of rebellion to my 5-year-old mind) says "Hold on, duuude!" The duuude was enunciated with a perfect California surfer's accent.
Then I woke up.
I had an unrelated nightmare, at a similar age, where "Then I woke up" didn't end the story. I woke up, and was being threatened by the giant snake from "The Jungle Book". He threatened to eat me unless I fell back asleep, which isn't easy when you're awake and there's a dream sitting on your bed anyway, how the heck did you escape my dream, MOM COME QUICK!. I don't remember how that situation got resolved, actually.