Oh man
So in my dream, there were these things called "wake gators" -- miniature alligators that crawled onto your back, up near the shoulder, while you were asleep, and then just stayed there until later in the day when you accidentally brushed them off and realized that an alligator had been on you all day. (I learned about them when one fell into the sink while I was brushing my teeth.)
There was even a book called Wake Gators: the Hidden Killers, so presumably they could also do... things... other than just staying there.
Of course, since they only came near you while you were asleep, this wasn't scary during the dream because I was "awake" the whole time. But when I actually woke up this morning and realized that I'd just been lying there, asleep and vulnerable, for hours... well, let's just say that I've never reached behind my back to touch my shoulderblades quite so apprehensively.
language:
I hate to tell you this, but there's one on you right now. No, don't turn around... see, he scuttled to the other side. But he doesn't look like one of the killer ones. I think.